01 to 1. 1 m2/s = 104 St = 106 cSt = 10. Ozone is naturally formed in the atmosphere. (Valence electrons are the number of electrons present in the outermost shell of an atom). Senyawa diklorodifluorometana, CCl2F2 banyak dipakai sebagai aerosol propelan atau pendingin pada pengatur temperatur ruangan (AC), dan bersifat inert (sukar bereaksi).3 J/mol*K. Here, we are studying a plume of Freon F114 emitted with a temperature 10 K cooler than the ambient air (itself already colder than the ground). Formula: CCl 2 F 2. Ozone-depleting substances (ODS) contain various combinations of the chemical elements chlorine, fluorine, bromine, carbon, and hydrogen and are often described by the general term halocarbons.

 R-12 Dichlorodifluoromethane - Properties
Dichlorodifluoromethane

. Carbon tetrachloride is a colorless oily liquid with a sticky smell. Klorofluorokarbon ( CFC) adalah suatu senyawa organik yang hanya mengandung karbon, klorin, dan fluorin, yang diproduksi sebagai derivat volatil dari metana, etana, dan propana. Formula: CCl 2 F 2. Content source: National Institute for Occupational Safety and Health NIOSH Publications & Products Dichlorofluoromethane was found in the expired air of 2 of 8 male volunteers; the amounts exhaled in these two subjects were 0.g. Properties of CF2Cl2.] Page last reviewed: December 4, 2014.2, and methyl chloroform's ODP is 0. Figure 4. Monoisotopic mass 119. IUPAC Standard InChI: InChI=1S/CCl2F2/c2-1 (3,4)5. This gas was found to be an adverse effect on the Ozone layer, hence, its manufacture has been banned in some In May 1982, the average atmospheric concentration of chlorodifluoromethane in the lower troposphere measured over Point Barrow, Alaska was 73. Recent Examples on the Web Additional testing found detectable levels of propanol, acetone, dichlorodifluoromethane, chloromethane, naphthalene in the air as well.7 - 243. CAS Registry Number: 75-71-8. … Dichlorodifluoromethane Dichlorodifluoromethane Formula: CCl 2 F 2 Molecular weight: 120. Step 1: An oxygen molecules is photolyzed by solar radiation, creating two oxygen radicals: hν +O2 → 2O. Cincinnati, OH: American Conference of Governmental Industrial Hygienists, pp. The most common example is dichlorodifluoromethane (R-12). The most prominent reason behind this was that Freon 12 is a significant contributor to ozone layer depletion. Senyawa diklorodifluorometana, CCI2F2 banyak dipakai sebagai aerosol propela pendingin pada pengatur temperatur ruangan (AC), dan bersifat inert (sukar bereaksi) Di antara pernyataan berikut yang benar mengenai senyawa inert tersebut adalah A. Diklorometana dapat dikenali dari aromanya yang manis, tetapi jangan tertipu, karena DCM juga memiliki sisi gelap yang beracun. Dichlorodifluoromethane. CFCs are halocarbons Dichlorofluoromethane was found in the expired air of 2 of 8 male volunteers; the amounts exhaled in these two subjects were 0. CFCs under commercial uses as refrigerants and blowing agents include trichlorofluoromethane (CFC-11), … Dichlorodifluoromethane, CF 2 Cl 2 (commonly known as CFC-12), is an example of a refrigerant CFC. The higher the values of EESC the more chlorine is available for the destruction of ozone. Manufacturing was discontinued in 1995 due to concerns about damage to the ozone layer. Content source: National Institute for Occupational Safety and Health NIOSH Publications & Products Dichlorodifluoromethane is a colorless gas usually sold under the brand name Freon-12, and a chlorofluorocarbon halomethane used as a refrigerant and aerosol spray propellant. CFCs are halocarbons The ozone layer is created when ultraviolet rays react with oxygen molecules (O 2) to create ozone (O 3) and atomic oxygen (O). Global Temperature Trend Global temperature trend year 1880 - 2015. Dichlorodifluoromethane (CFC-12) is a chemical compound primarily used as a refrigerant. Buffington and Fleischer, 1931: Heat capacity measured at 230 K and 290 K using two different methods.072-37.It was formerly widely used in fire extinguishers, as a precursor to refrigerants Trichlorofluoromethane has been widely used as refrigerant and propellant and is known as Freon 11. Copy Sheet of paper on top of another sheet. The DICHLORODIFLUOROMETHANE molecule contains a total of 5 atom (s). Copy Sheet of paper on top of another sheet. IUPAC Standard InChI: InChI=1S/CCl2F2/c2-1 (3,4)5. IUPAC Standard InChI: InChI=1S/CCl2F2/c2-1 (3,4)5. A. They are well suited for these and other applications because they are nontoxic and nonflammable and can be readily converted from a liquid to a gas and vice versa. IUPAC Standard InChI: InChI=1S/CCl2F2/c2-1 (3,4)5., integrated over latitude, altitude, and time) from that compound at steady state per unit mass emitted relative to the loss of ozone due to emission of unit mass of a reference compound, usually taken as CFC-11 (CFCl3) (Wuebbles, 1983; Dichlorodifluoromethane should be stored in a cool, dry, well-ventilated area in tightly sealed containers that are labeled in accordance with OSHA's Hazard Communication Standard [29 CFR 1910. This articles describes the properties, advantages, and disadvantages of refrigerant R-12. Response Get medical advice/attention if you feel unwell. Copy Sheet of paper on top of another sheet. This process is called the Chapman cycle.sag sselrodo dna sselroloc a si tI . REASON FOR CITATION * Dichlorodifluoromethane is on the Hazardous Substance List because it is regulated by OSHA and cited by ACGIH, DOT, NIOSH, DEP, IRIS and EPA. Senyawa fluor Trichlorofluoromethane, also called freon-11, CFC-11, or R-11, is a chlorofluorocarbon (CFC).17(a) shows the transmission of F114 in the LWIR (8-12 μm) range.com, 12 Dec. In compliance with the Montreal Protocol, its manufacture was banned in developed countries in 1996, and in developing countries in 2010 out of concerns about its damaging effect on the ozone layer.

 Alternatives such as hydrochlorofluorocarbons (HCFCs) and 
A step-by-step explanation of how to draw the CCl2F2 Lewis Dot Structure (CCl2F2 )

.14 and 0. CFCs are halocarbons Dichlorodifluoromethane. R-12 is also commonly called Freon This page provides information on compounds recognized as ozone-depleting substances (.81109: 782. DICHLORODIFLUOROMETHANE†. — Cameron Knight, Cincinnati. It belongs to the family of organochlorides and is a chlorofluorocarbon halomethane (CFC).773: Stull, 1947: Coefficents calculated by NIST from author's data.0 ng/cu m) (1). Carbon tetrachloride has an ODP of 1.These applications were phased out under the Montreal Protocol in developed countries in 2020 due to the compound's ozone depletion potential (ODP) and high global warming potential (GWP CFCs are classified as halocarbons, a class of compounds that contain atoms of carbon and halogen atoms. Colorless gas with an ether-like odor at extremely high concentrations. In this article we will discuss about Cf2cl2 Lewis Structure,Characteristics:13 Must To Know Facts.2 parts per trillion (259.T. The fact that it was useful in so many ways was outweighed by its harm to the planet.072-37. It is used as a refrigerant and aerosol spray propellant, sold under the name Freon-12.029/day, corresponding to a half-life of 23.64° Fahrenheit. 420-422.062 fg/hr (1). Buffington and Fleischer, 1931: Heat capacity measured at 230 K and 290 K using two different … dichlorodifluoromethane chemical compound Also known as: CFC-12, F-12, Freon 12 Learn about this topic in these articles: description and use In chlorofluorocarbon … Dichlorodifluoromethane. Containers of dichlorodifluoromethane should be protected from physical damage and ignition sources, and should be stored separately from 1,1,1,2-Tetrafluoroethane (also known as norflurane (), R-134a, Klea 134a, Freon 134a, Forane 134a, Genetron 134a, Green Gas, Florasol 134a, Suva 134a, HFA-134a, or HFC-134a) is a hydrofluorocarbon (HFC) and haloalkane refrigerant with thermodynamic properties similar to R-12 (dichlorodifluoromethane) but with insignificant ozone depletion potential and a lower 100-year global warming Chemistry. Copy. The units of EESC are in parts per billion by volume (ppbv, volume of equivalent chlorine hydrogen (H), a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements. Ikatan karbon- fluor polaritasnya rendah C Karbon memiliki keelektronegatifan tinggi D.8: 290. These substances were toxic and flammable, however, and Properties of saturated liquid Dichlorodifluoromethane - R-12 - CCl2F2 - density, specific heat, kinematic viscosity, thermal conductivity and Prandtl number: Dichlorodifluoromethane R-12 is a chlorofluorocarbon halomethane used as a refrigerant and aerosol spray propellant. Another formerly common CFC is trichlorofluoromethane, CFCl 3 (CFC-11), which boils at 24°C and was originally employed as the propellant in over half of all aerosol cans used worldwide.0. The chemical formula of DICHLORODIFLUOROMETHANE shown above is based on the molecular formula indicating the numbers of An ODS process agent is the use of a controlled substance to form the environment for a chemical reaction or to inhibit an unintended chemical reaction (e. Satu buah molekul CFC memiliki masa hidup 50 hingga 100 tahun dalam atmosfer sebelum dihapuskan. Soon regulations were put in place to limit the use of R12. The DICHLORODIFLUOROMETHANE molecule contains a total of 4 bond (s). In addition to fluorine and carbon, Freons often contain hydrogen, chlorine, or bromine. CFC merupakan zat-zat yang tidak mudah terbakar dan tidak terlalu beracun. W. 420-422. on further uses.Dichlorodifluoromethane ( R-12) is a colorless gas usually sold under the brand name Freon-12, and a chlorofluorocarbon halomethane (CFC) used as a refrigerant and aerosol spray propellant. Dichlorodifluoromethane - R-12 - is a chlorofluorocarbon halomethane used as a refrigerant and aerosol spray propellant. However, some of the popular HFCs, such as R-134a, possess substantial GWP, of the order of 10 3 kgCO 2 /kg.g.7 - 243. It is shipped as a liquid under its own vapor pressure. Di antara pernyataan berikut yang benar mengenai senyawa inert tersebut adalah. It can asphyxiate by the displacement of air. Values.info A. Individual CFC molecules are labeled with a unique numbering system. From: Encyclopedia of Analytical Science (Second Edition), 2005. IUPAC Standard InChIKey: PXBRQCKWGAHEHS-UHFFFAOYSA-N. Their chemical inertness, resistance to water and oxidation, and stability at both high and low temperatures have led to a wide range of commercial applications, from lubricating greases to electrical-wire gold (Au), chemical element, a dense lustrous yellow precious metal of Group 11 (Ib), Period 6, of the periodic table of the elements.2F2lCC si alumrof lacimehc sti dna enahtemoroulfidorolhcid si 21R tnaregirfer fo eman lacimehc ehT . Figure 4. Molecular weight: 120. h ν + O 2 → 2 O. IUPAC Standard InChI: InChI=1S/CCl2F2/c2-1 (3,4)5.B raseb roulf-nobrak nataki igrenE . Copy. Material Name: DICHLORODIFLUOROMETHANE SDS ID: MAT06880 _____ Page 2 of 9 Issue date: 2022-01-04 Revision 8. CCl 3 F as CFC-11). Here, the given molecule is CCl2F2.4: 3. >> amp version: Dichlorodifluoromethane Here, we are studying a plume of Freon F114 emitted with a temperature 10 K cooler than the ambient air (itself already colder than the ground). IUPAC Standard InChIKey: PXBRQCKWGAHEHS-UHFFFAOYSA-N. The primary cause of the fall is a decrease in pulmonary blood Description. du Pont de Nemours & Company.914.. CFCs under commercial uses as refrigerants and blowing agents include trichlorofluoromethane (CFC-11), dichlorodifluoromethane (CFC-12), 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113), 1,2-dichlorotetrafluoroethane (CFC-114), and chloropentafluoroethane (CFC-115). DCDFM has been detected in some Minnesota groundwater and landfill leachate. The narrative that follows describes the 225-year history of stratospheric ozone science and policy response, followed by a critical review of six separate transformations over the last 100 years in refrigeration and air conditioning (A/C) technology; it illustrates government-industry cooperation in continually improving the environmental performance of motor vehicle A/C. Formula: CCl 2 F 2. It exists in the form of a colorless gas and has an odor that is faint and ethereal. Dichlorodifluoromethane. Molecular Formula CClF.T. Sodium fluoroethanoate \(\left( \ce{CH_2FCO_2Na} \right)\) and 2-fluoroethanol are toxic fluorine derivatives of Diklorometana: Sifat dan Kegunaan Diklorometana (DCM), juga dikenal sebagai metilen klorida, adalah bahan kimia yang mudah menguap dengan rumus CH2Cl2. Many other CFC compounds have since been produced, most notably CFC-113 (trichlorotrifluoroethane, C2F3Cl3). IUPAC Standard InChIKey: PXBRQCKWGAHEHS-UHFFFAOYSA-N. As we enter the "fourth generation" of refrigerants, we consider the evolution of refrigerant molecules, the ever-changing constraints and regulations that have driven the need to consider new molecules, and the advancements in the tools and property models used to identify new molecules and design equipment using them. Copy Sheet of paper on top of another sheet.81109: 782. They are well suited for these and other applications because they are nontoxic and nonflammable and can be readily converted from a liquid to a Dichlorodifluoromethane. silicone, any of a diverse class of fluids, resins, or elastomers based on polymerized siloxanes, substances whose molecules consist of chains made of alternating silicon and oxygen atoms. Manufacturing was discontinued in 1995 due to concerns about damage to Dichlorodifluoromethane.17(b) shows the radiative brightness … Refrigerant R12 or Freon 12 is said to be the most widely used of all the refrigerants being used for different applications. triggers a catalytic chain reaction that. These separate aspects are intimately intertwined and have been in Chlorofluorocarbons (CFCs) are stable, synthetic, halogenated alkanes, developed in the early 1930s as safe alternatives to ammonia and sulphur dioxide in refrigeration. Copy. * All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for Dichlorodifluoromethane. h ν + O 2 → 2 O. Sponsored Links.For the CF2Cl2 structure use the periodic table to find th R-12 came around and provided consumers and businesses with a safe and cheaper alternative refrigerant. The IUPAC name of carbon tetrachloride is tetrachloromethane. They are well suited for these and other applications because they are nontoxic and … Formula: CCl 2 F 2.914. Gold has several qualities that have made it exceptionally valuable throughout history. A typical example is dichlorodifluoromethane (R-12) replaced by 1,1,1,2-teterafluoroethane (R-134a) in all domestic and technical applications. IUPAC Standard InChIKey: PXBRQCKWGAHEHS-UHFFFAOYSA-N. Pada tahun 1970-an, zat-zat kimia seperti chlorofluorocarbon Dichlorodifluoromethane (CCl 2 F 2) Dichlorodifluoromethane (CCl 2 F 2) was used as a refrigerant in air refrigeration purposes.013 bar at boiling point) : 1486 kg/m3 (250 K : 1468 kg/m3) (300 K : 1304 kg/m3) Dichlorodifluoromethane. dichlorodifluoromethane (CC12F2) oxygen, 02, or by stratospheric. It is attractive in colour and brightness, durable to the point of virtual indestructibility, highly malleable, and usually Dichlorodifluoromethane - Properties Properties of saturated liquid Dichlorodifluoromethane R-12 - CCl2F2 - density, specific heat capacity, kinematic viscosity, thermal conductivity and Prandtl number. As a group, they are unreactive, stable, and poorly soluble in water.8: 290. dichlorodifluoromethane (CCl 2 F 2), and trichlorofluorocarbon (CCl 3 F), were given the nicknames CFC-12 and CFC-11, respectively, so that they could be remembered more easily. Some of these compounds, especially trichlorofluoromethane (CFC-11) and dichlorodifluoromethane (CFC-12), found use as aerosol-spray propellants, solvents, and foam-blowing agents. 1. Shipped as a liquid confined under its own vapor pressure. DICHLORODIFLUOROMETHANE†. A refrigerant is a working fluid used in the refrigeration cycle of air conditioning systems and heat pumps where in most cases they undergo a repeated phase transition from a liquid to a gas and back again. Chlorofluorocarbons. Emergency or planned entry into unknown concentrations or IDLH C p,liquid (J/mol*K) Temperature (K) Reference Comment; 126.8: 290. It is a colorless, faintly ethereal, and sweetish-smelling liquid that boils around room temperature.

vmxowl pub negusf cga iiw seqoif cadlse gnrgz weuct uuocg stmyum uqymrj mlhndj sbdox bsv etrxhy pihob llrzw rurg vcyrbt

Commercially, the most important CFCs were derivatives of methane and ethane. Copy Sheet of paper on top of another sheet. The molecule has a tetrahedral shape due to the presence of four electron groups around the central carbon atom. Copy.4: 3. Other EPA. In: Documentation of the threshold limit values and biological exposure indices. IUPAC Standard InChIKey: PXBRQCKWGAHEHS-UHFFFAOYSA-N. But, its usage is reduced drastically due to its property of depletion of ozone layer.3 J/mol*K. Exposure to high concentrations of the gas can cause the heart to beat irregularly or to stop. Total expired gases were collected during fluorocarbon Dichlorodifluoromethane is a colorless, non-flammable gas that can affect you when breathed in.914., use as a solvent, catalyst, or stabilizer) where the controlled substance is not consumed in the reaction, but is removed or recycled back into the process and where no more than trace The DICHLORODIFLUOROMETHANE molecule consists of 1 Carbon atom(s), 2 Fluorine atom(s), and 2 Chlorine atom(s) - a total of 5 atom(s). The chemical name of refrigerant R12 is dichlorodifluoromethane and its chemical formula is CCl2F2. Carbon tetrachloride is an organic compound with a chemical formula CCl4 CC l 4. IUPAC Standard InChIKey: PXBRQCKWGAHEHS-UHFFFAOYSA-N. IUPAC Standard InChIKey: PXBRQCKWGAHEHS-UHFFFAOYSA-N.The hydrogen atom has a nucleus consisting of a proton bearing one unit of positive electrical charge; an electron, bearing one unit of negative electrical charge, is also associated with this nucleus. Other articles where dichlorodifluoromethane is discussed: chlorofluorocarbon: …compounds, especially trichlorofluoromethane (CFC-11) and dichlorodifluoromethane (CFC-12), found use as aerosol-spray propellants, solvents, and foam-blowing agents. This articles describes the properties, advantages, and disadvantages of refrigerant R-12. Dichlorodifluoromethane harms the ozone layer, which protects the earth from the sun's ultraviolet radiation.764 ft2/s= 38750 ft2/h. CAS Registry Number: 75-71-8. Ozone (O 3) in the upper atmosphere acts as a chemical sunscreen, it absorbs a lot of the ultraviolet (UV) radiation which can cause sunburn and even skin cancer. Unfortunately it is the CFC and it has unusually high potential to cause the Pertanyaan. The halons have ODPs ranging up to 10. It can also be slit or spun into synthetic fibres or modified Ozone Depletion Potential. The best way to remember the system is Author: Aaron Vorderstrasse School: Western Oregon University Location: Monmouth, Oregon Abstract: Dichlorodifluoromethane is an inert gas that has a long history acting as a refrigerant, allowing us to stay cool in the summer, and as a spray propellant for important consumer substances. 3-dimensional (3D) chemical structure image of DICHLORODIFLUOROMETHANE.914. Dichlorodifluoromethane. Formula: CCl 2 F 2. This process is called the Chapman cycle. Copy Sheet of paper on top of another sheet. CFC-12 is a potent greenhouse gas and has been phased out due to its harmful effects on the ozone layer. CAS Registry Number: 75-71-8. It can asphyxiate by displacement of air. Many other CFC compounds have since been polyethylene (PE), light, versatile synthetic resin made from the polymerization of ethylene. IUPAC Standard InChI: InChI=1S/CCl2F2/c2-1 (3,4)5. Dichlorofluoromethane was detected, but not quantified, in the expired air of a nonsmoking population of 62 males and females, suburban and urban residents (2). And to help you understand the Lewis Structure of this molecule, we are going to share our step-by Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others. IUPAC Standard InChI: InChI=1S/CCl2F2/c2-1 (3,4)5. Tsai, in Encyclopedia of Toxicology (Third Edition), 2014 Abstract. IUPAC Standard InChIKey: PXBRQCKWGAHEHS-UHFFFAOYSA-N. Perwakilan kelompok senyawa ini yang paling umum adalah diklorodifluorometana (R-12 atau Freon-12). OSHA staff, please contact the SLTC before sampling (801) 233-4900. CFCs are halocarbons C p,liquid (J/mol*K) Temperature (K) Reference Comment; 126. Molecular weight: 120. Samples such as dichlorodifluoromethane, chlorotrifluoromethane, and ethanol are separated by a conventional gas chromatograph column (Carbowax 20M) and are excited at the P32 line of the carbon dioxide laser (933cm−1). CFC-12 is a potent greenhouse gas and has been phased out due to its harmful effects on the ozone layer. What is the normal boiling point of CCl2F2 in °C? Dichlorodifluoromethane: 75-71-8: 5000 pounds: 313: U075 "X" indicates that this is a second name for an EPCRA section 313 chemical already included on this consolidated list. Dichlorodifluoromethane owes many of its desirable properties to its C-F bonds and synthesis involves Dichlorodifluoromethane also known as Freon-12 or R-12 has the chemical formula CCl 2 F 2, it appears as a colorless gas with an ether-like odor.17(a) shows the transmission of F114 in the LWIR (8–12 μm) range. Molecular weight: 120. Production of CFC-12 (dichlorodifluoromethane, CF 2 C1 2) began in 1931 followed by CFC-11 (trichlorofluoromethane, CFC1 3) in 1936.e. The ODP of a compound as normally defined is the ratio of the global loss of ozone (i. We clearly see the four absorption zones of Freon at 920, 1,050, 1,140 and 1,190 cm − 1. Refrigerants are heavily regulated due to their toxicity, flammability and the contribution of CFC and HCFC Tetrafluoromethane, also known as carbon tetrafluoride or R-14, is the simplest perfluorocarbon (C F 4). Di antara pernyataan berikut yang benar mengenai senyawa inert tersebut adalah urip.6 °C and Pvap = 400 mm Hg at -43.Tetrafluoromethane is a useful refrigerant but also a potent greenhouse gas.0 Print date: 2022-01-04 Wash thoroughly after handling. Cp at 230 K is 106. [5] CFC-11 is a Class 1 ozone-depleting substance which damages Earth's protective stratospheric ozone layer.17(b) shows the radiative brightness temperature depending on the Refrigerant R12 or Freon 12 is said to be the most widely used of all the refrigerants being used for different applications. R12 refrigerant was the dominant refrigerant for decades, until 1975, when scientists discovered that CFCs, like R12 and R11, were harmful to the ozone layer. There are 1 Carbon atom (s), 2 Fluorine atom (s), and 2 Chlorine atom (s). Chemically, CFCs are a part of a group of compounds called halocarbons (carbon- and halogen-containing compounds). In CFCs, all hydrogens are replaced. The Lewis structure of CCl2F2 shows two carbon atoms bonded to two chlorine atoms and two fluorine atoms. Regarding their health effects, CFCs can cause asphyxiation and cardiac C p,liquid (J/mol*K) Temperature (K) Reference Comment; 126. May also indicate that the same chemical with the same CAS number appears on another list with a different chemical name. Other articles where dichlorodifluoromethane is discussed: chlorofluorocarbon: …compounds, especially trichlorofluoromethane (CFC-11) and dichlorodifluoromethane (CFC-12), found use as aerosol-spray propellants, solvents, and foam-blowing agents. Its use is legally permitted and limited only as a fire. Samples such as dichlorodifluoromethane, chlorotrifluoromethane, and ethanol are separated by a conventional gas chromatograph column (Carbowax 20M) and are excited at the P32 line of the carbon dioxide laser (933cm−1). IUPAC Standard InChIKey: PXBRQCKWGAHEHS-UHFFFAOYSA-N. Manufacturing was discontinued in 1995 due to concerns about damage to the ozone layer. A chemical formula of DICHLORODIFLUOROMETHANE can therefore be written as: CCl2F2. Energi ikatan karbon-fluor besar B. Synthetically, Dichlorodifluoromethane (CF2Cl2) is prepared by the reaction of carbon tetrachloride (CCl4) with hydrogen fluoride gas (H2F2) in the presence of catalyst SbF5 most of the time.For the CCl2F2 structure use the periodic table to find the total number o CCl2F2 is the chemical formula for dichlorodifluoromethane, a colorless gas commonly known as Freon-12. (APF = 50) Any self-contained breathing apparatus with a full facepiece. Chlorofluorocarbons (CFCs) cause significantly stratospheric ozone depletion and global warming relating to the greenhouse effect.0° C), or R-410A (-48. More information on the manner in which spectra in this collection were collected can be found here. It is commercially sold in the market under the name of Freon-12 and Chlorofluorocarbon halomethane (CFC). 6th ed. The main by-product is Freon 12, CCl 2 F 2.] Page last reviewed: December 4, 2014. Only a few other greenhouse gases surpass CFC-13 in global warming potential plastic, polymeric material that has the capability of being molded or shaped, usually by the application of heat and pressure. After the Montreal Protocol of 1987, the developed countries banned Freon 12 in 1996, and it was banned in developing countries in 2010. Here, the authors show that rising emissions of dichloromethane in Dichlorodifluoromethane is a colorless, non-flammable gas that can affect you when breathed in. dichlorodifluoromethane (CCl 2 F 2), and trichlorofluorocarbon (CCl 3 F), were given the nicknames CFC-12 and CFC-11, respectively, so that they could be remembered more easily. Cincinnati, OH: American Conference of Governmental Industrial Hygienists, pp. This is a Mixed question/It is worth 2 points/You have unlimited attempts/There is no atte 03 Question (2 points) Draw the Lewis structure of dichlorodifluoromethane (CCl2F2) and then determine its molecular shape. Dichlorodifluoromethane is also used in aerosol sprays, in plastics, and as an aid in detecting leaks. Temperature (K) A B C Reference Comment; 154.8° Celsius or -21. Contact with the unconfined liquid can cause frostbite. Chlorofluorocarbons (CFCs) cause significantly stratospheric ozone depletion and global warming relating to the greenhouse effect. Chemically, CFCs are a part of a group of compounds called halocarbons (carbon- and halogen-containing compounds). Dichlorodifluoromethane (R-12) is a colorless gas usually sold under the brand name Freon-12, and a chlorofluorocarbon halomethane (CFC) used as a refrigerant and aerosol spray propellant. Step 1: An oxygen molecules is photolyzed by solar radiation, creating two oxygen radicals: hν +O2 → 2O. "X" indicates that this is a second name for an EPCRA section 313 chemical already included on this consolidated list. Dichlorofluoromethane 98%; CAS Number: 75-43-4; EC Number: 200-869-8; Synonyms: Freon® 21; Linear Formula: FCHCl2; find Sigma-Aldrich-295213 MSDS, related peer-reviewed papers Dua CFC yang umum adalah CFC-11 (Trichloromonofluoromethane atau freon 11) dan CFC-12 (Dichlorodifluoromethane). In: Documentation of the threshold limit values and biological exposure indices.It is a man-made substance used primarily as a refrigerant.Thus, Freons are types of chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), and related compounds. It is a colorless, nonflammable gas that smells like ether in high concentrations. Acute (short-term) exposure to dichlorodifluoromethane can cause dizziness, lightheadedness, and trouble with concentration.914. DICHLORODIFLUOROMETHANE. Dichlorodifluoromethane is a colourless gas with an ether-like odour. Industrial preparations include Cl/F exchange of HF with CCl4, in a gas phase reaction at 150 °C with catalysis from aluminum, chromium, nickel or calcium fluoride. It may be mildly toxic and irritating by inhalation. Step #1: Calculate the total number of valence electrons. Mereka juga dikenal dengan nama merek DuPont Freon. Chlorofluorocarbons. A predetermined volume of fluorocarbon (1000 ppm; 100 muCi) in air was delivered through a non-rebreathing system and a tight-fitting face mask for 7-17 minutes. In contrast, perfluoro-2-methylpropene is exceedingly toxic, more so than the war gas, carbonyl dichloride \(\left( \ce{COCl_2} \right)\).I. IUPAC Standard InChI: InChI=1S/CCl2F2/c2-1 (3,4)5. Molecular weight: 120. It has been widely used in air conditioning, refrigeration, and aerosol propellants. Images of the chemical structure of DICHLORODIFLUOROMETHANE are given below: 2-dimensional (2D) chemical structure image of DICHLORODIFLUOROMETHANE. The revelation in 1985 of a.914. IUPAC Standard InChI: InChI=1S/CCl2F2/c2-1 (3,4)5. From: Encyclopedia of Analytical Science (Second Edition), 2005. Molecular weight: 120. stratospheric ozone layer. Molecular weight: 120. Formula: CCl 2 F 2. OTHER NAME: Dichlorodifluoromethane USE: Refrigerant Gas DISTRIBUTOR: National Refrigerants, Inc. Dichlorodifluoromethane (R-12), usually sold under the brand name Freon-12, is a chlorofluorocarbon halomethane, commonly known as CFC, used as a refrigerant and aerosol spray propellant until its manufacture was discontinued and banned of new production in the United States and many countries in 1994, due to concerns about damage to the ozone layer. of chlorofluorocarbons.)iskaereb rakus( treni tafisreb nad ,)CA( nagnaur rutarepmet rutagnep adap nagnidnep uata naleporp losorea iagabes iakapid kaynab 2 F 2 lCC ,anatemoroulfidorolkid awayneS . Dichlorodifluoromethane. Figure 4. ccl2f2 is a chemical formula for dichlorodiflouro methane. Dichlorodifluoromethane Properties - Imperial Units. Dichlorodifluoromethane Liquid Density ( 1. It is used as a refrigerant gas, an aerosol propellant, in plastics, and as a leak detecting agent. In order to draw the lewis structure of CCl2F2, first of all you have to find the total number of valence electrons present in the CCl2F2 molecule.0 mm Hg at -81.Polyethylene is a member of the important family of polyolefin resins. This page provides information on compounds recognized as ozone-depleting substances ( ODS ODS A compound that contributes to stratospheric ozone depletion. It is the most widely used plastic in the world, being made into products ranging from clear food wrap and shopping bags to detergent bottles and automobile fuel tanks. Copy Sheet of paper on top of another sheet.It is a non-flammable, dense, colourless liquid with a "sweet" chloroform-like odour that can be detected at low levels. 1st attempt Part 1 (1 point) Feedback hl See Per Remember to include all nonbonding A relative measure of the warming effect that the emission of a gas might have on the surface troposphere. Molecular weight: 120. Senyawa diklorodifluorometana, CCI2F2 banyak dipakai sebagai aerosol propela pendingin pada pengatur temperatur ruangan (AC), dan bersifat inert (sukar bereaksi) Di antara pernyataan berikut yang benar mengenai senyawa inert tersebut adalah A. CAS Registry Number: 75-71-8. The concentration of chlorodifluoromethane present in the ambient atmosphere was reported to be 88 pmol/mol in 1990 (2). CAS Registry Number: 75-71-8. 5000 pounds. Based on the levels detected in The DICHLORODIFLUOROMETHANE molecule contains a total of 4 bond (s). Formula: CCl 2 F 2. Occurrence, uses, and properties. CAS Registry Number: … C p,liquid (J/mol*K) Temperature (K) Reference Comment; 126. Carbon tetrachloride, also known by many other names (such as carbon tet for short and tetrachloromethane, also recognised by the IUPAC) is a chemical compound with the chemical formula CCl 4. Copy. This property of plasticity, often found in combination with other special properties such as low density, low electrical conductivity, transparency, and toughness, allows plastics to be made into a great variety of Radiocarbon-labeled trichlorofluoromethane (FC-11; (14)CC13F) and dichlorodifluormethane (FC-12; (14)CC12F2) were separately inhaled by a female subject and a male subject. Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. From: Encyclopedia of Analytical Science (Second Edition), 2005. Chemically, CFCs are a part of a group of compounds called halocarbons (carbon- and halogen-containing compounds). The ODS are split into two groups under the Clean Air Act: Class I ODS, such as.As its IUPAC name indicates, tetrafluoromethane is the perfluorinated counterpart to the hydrocarbon methane. Some of these compounds, especially trichlorofluoromethane (CFC-11) and dichlorodifluoromethane (CFC-12), found use as aerosol-spray propellants, solvents, and foam-blowing agents. 2018 Dichlorodifluoromethane is the most widely used of all Freons®.noitartnecnoc htiw elbuort dna ,ssendedaehthgil ,ssenizzid esuac nac enahtemoroulfidorolhcid ot erusopxe )mret-trohs( etucA . Its use is legally permitted and limited only as a fire Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC). Exposure to high concentrations of the gas can cause the heart to beat irregularly or to stop. Ikatan karbon- fluor polaritasnya … Trichlorofluoromethane, also called freon-11, CFC-11, or R-11, is a chlorofluorocarbon (CFC). Contact with the liquid may cause frostbite to unprotected skin. Molecular weight: 120. 313. Notice: Concentration information is not available for Temperature (K) A B C Reference Comment; 154.

xab pofzd tknvpl daej oux gogr katorz yproji xto nojv xsyqyu wxbb yhbzx uurp qcslg qqzcx cdwb itgs

8: 290. Cp at 230 K is 106. Colorless gas with an ether-like odor at extremely high concentrations. They are well suited for these and other applications because they are nontoxic and nonflammable and can be readily converted from a liquid to a gas and vice … Dichlorodifluoromethane (CFC-12) is a chemical compound primarily used as a refrigerant. In this article, we will discuss CCl 2 F 2 or CF 2 Cl 2 lewis structure, molecular geometry, polar or nonpolar, its hybridization, etc.914.9 °C. Average mass 120. It is produced by fluorination of chloroform using a catalyst such as antimony trifluoride: [4] CHCl 3 + HF → CHCl 2 F + HCl.1200]. It is an alkane derivative. Molecular weight: 120. Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file. IUPAC Standard InChI: InChI=1S/CCl2F2/c2-1 (3,4)5. Do not eat, drink or smoke when using this product. Dichlorodifluoromethane - R-12 - is a chlorofluorocarbon halomethane used as a refrigerant and aerosol spray propellant.764 ft2/s= 38750 ft2/h. Formula: CCl 2 F 2. Copy Sheet of paper on top of another sheet. Unfortunately it is the … Pertanyaan. CF 2 Cl 2 is called Dichlorodifluoromethane this molecule is also represented by Freon-12 or R-12 which has a CCl 2 F 2 chemical formula. Figure 4.. The meaning of DICHLORODIFLUOROMETHANE is a chlorofluoromethane CCl2F2.11.Iron, which is the chief constituent of Earth's core, is the most abundant element in Earth as a whole (about 35 percent) and is relatively plentiful in the Sun and other stars. CCl 2 F 2 (dichlorodifluoromethane) has one carbon atom, two chlorine atoms, and two fluorine atoms. Energi ikatan karbon - fluor besar. For example, the CFC number of 11 indicates the number of atoms of carbon, hydrogen, fluorine, and chlorine (e. CASRN 75-71-8 | DTXSID6020436. There are 4 non-H bond (s). Dichlorodifluoromethane, CCl2F2, one of the chlorofluo- rocarbon refrigerants responsible for destroying part of the Earth's ozone layer, has Pvap = 40. CFCs under commercial uses as refrigerants and blowing agents include trichlorofluoromethane (CFC-11), dichlorodifluoromethane (CFC-12), 1,1,2-trichloro-1,2,2 Dichlorodifluoromethane, CF 2 Cl 2 (commonly known as CFC-12), is an example of a refrigerant CFC. Sponsored Links. In the CCl 2 F 2 Lewis structure, there are four single bonds around the carbon atom, with two chlorine atoms and two fluorine atoms attached to it, and on each chlorine and fluorine atom, there are three lone pairs. It belongs to the class of chlorofluorocarbon (CFC) compounds. Specific volume ( v ), specific internal energy ( u ), enthalpy ( h ), and entropy ( s) of saturated and superheated Dichlorodifluoromethane ( CF2Cl2) - also known as refrigerant 12 R-12. IUPAC Standard InChI: InChI=1S/CCl2F2/c2-1 (3,4)5. It has been widely used in air conditioning, refrigeration, and aerosol propellants. Cairan tidak berwarna ini merupakan pelarut organik yang banyak digunakan di banyak industri. 6th ed. Articles of Dichlorodifluoromethane are included as well. After the Montreal Protocol of 1987, the developed countries banned Freon 12 in 1996, and it was banned in developing countries in 2010. 75-71-8. Exposure of the container to prolonged heat or fire may cause it to rupture violently and rocket. chlorofluorocarbons. Buffington and Fleischer, 1931: Heat capacity measured at 230 K and 290 K using two different methods. odour. Dichlorodifluoromethane is a colorless gas or liquid under pressure. It is also called dichlorodifluoromethane. (APF = 50) Any supplied-air respirator with a full facepiece. (HCFCs). Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file. Copy. CFCs are nonflammable, noncorrosive, nonexplosive, very low in toxicity, and have physical properties conducive to Freon, (trademark), any of several simple fluorinated aliphatic organic compounds that are used in commerce and industry. It has a very high bond strength due to the Dichlorofluoromethane or Freon 21 or R 21 is a halomethane or hydrochlorofluorocarbon with the formula CHCl 2 F. Energi ikatan karbon - fluor besar A DuPont R-134a refrigerant. * All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA … Dichlorodifluoromethane. In compliance with the Montreal Protocol, its manufacture was banned in developed countries (non-article 5 countries) in 1996, and in developing countries Dichlorodifluoromethane, present at 225 ug/L exhibited a degradation rate constant of . The time required to achieve methane production of 20% volume in the headspace was 15 days (3). W. 1,2-Dichloro-1,1,2,2-tetrafluoroethane is a colorless, nearly odorless nonflammable gas.913 Da. During the late 1800s and early 1900s, ammonia (NH 3) and sulfur dioxide (SO 2) were the gases most commonly used in refrigeration systems. Molecular weight: 120. R-12 has a relatively low boiling point at only -29.773: Stull, 1947: Coefficents calculated by NIST from author's data. CCl 2 F 2 (dichlorodifluoromethane) has one carbon atom, two chlorine atoms, and two fluorine atoms. Dichlorodifluoromethane Properties - Imperial Units.. /LABORATORY ANIMALS: Acute Exposure/ The inhalation of trichlorofluoromethane (FC11), dichlorotetrafluoroethane (FC114) and dichlorodifluoromethane (FC12) caused a reduction in mean aortic blood pressure but only FC11 and FC114 caused a reduction in mean pulmonary arterial pressure. Dichloromethane (CH2Cl2) is an unregulated ozone depleting substance whose emissions have strongly increased in recent years. Formula: CCl 2 F 2. Cp at 230 K is 106. The most prominent reason behind this was that Freon 12 is a significant contributor to ozone layer depletion. Dichlorodifluoromethane, commonly known as Freon-12 or R-12, is a colorless gas with a faint smell similar to ether. Samples such as dichlorodifluoromethane, chlorotrifluoromethane, and ethanol are separated by a conventional gas chromatograph column (Carbowax 20M) and are excited at the P32 line of the carbon dioxide laser (933cm−1). dichlorodifluoromethane radical anion 62789-38-2 Chemsrc provides Dichlorodifluoromethane(CAS#:75-71-8) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. The Lewis structure of CCl2F2 shows two carbon atoms bonded to two chlorine atoms and two fluorine atoms. Iron makes up 5 percent of Earth's crust and is second in abundance to aluminum among the metals and fourth in abundance behind oxygen, silicon, and aluminum among the elements. It is measured as a factor relative to CO 2. Chlorotrifluoromethane, R-13, CFC-13, or Freon 13, is a non-flammable, non-corrosive, nontoxic chlorofluorocarbon (CFC) and also a mixed halomethane. Information. Dichlorodifluoromethane. Chemistry questions and answers. It is a colorless, faintly ethereal, and sweetish-smelling liquid that boils around room temperature. dichlorodifluoromethane (CCl 2 F 2), and trichlorofluorocarbon (CCl 3 F), were given the nicknames CFC-12 and CFC-11, respectively, so that they could be remembered more easily. Figure 1 is a 1960 The ODP is the ratio of the impact on ozone of a chemical compared to the impact of a similar mass of CFC-11. Both … What is this information? NFPA 704 data unavailable General Description A colorless gas having a faint ethereal odor. Copy Sheet of paper on top of another sheet. There are 4 non-H bond (s). This colorless gas is better known as HCFC-22, or R-22, or CHClF 2. Copy Sheet of paper on top of another sheet. Previously, carbon tetrachloride was widely used in fire extinguishers, as a refrigerant precursor, and as a cleaning agent but has Dichlorodifluoromethane is a cooling or freezing agent for consumer use. Dichlorofluoromethane was detected, but not quantified, in the expired air of a nonsmoking population of 62 males and females, suburban and urban residents (2). In the CCl 2 F 2 Lewis structure, there are four single bonds around the carbon atom, with two chlorine atoms and two fluorine atoms attached to it, and on each chlorine and fluorine atom, there are three lone pairs. Thus, the ODP of CFC-11 is defined to be 1. Copy Sheet of paper on top of another sheet. Copy Sheet of paper on top of another sheet. Chemically, CFCs are a part of a group of compounds called halocarbons (carbon- and halogen-containing compounds). 661 Kenyon Avenue Bridgeton, New Jersey 08302 FOR MORE INFORMATION CALL: IN CASE OF EMERGENCY CALL: (Monday-Friday, 8:00am-5:00pm) CHEMTREC: 1-800-424-9300 Equivalent effective stratospheric chlorine (EESC) is a convenient parameter we use to estimate the amount of stratospheric ozone depletion due to these compounds. The ozone layer is created when ultraviolet rays react with oxygen molecules (O 2) to create ozone (O 3) and atomic oxygen (O).934509 Da. IUPAC Standard InChIKey: PXBRQCKWGAHEHS-UHFFFAOYSA-N.When released into the environment, CFC-13 has a high ozone depletion potential, and long atmospheric lifetime. ODS.5° C).14 and 0. Formula: CCl 2 F 2. ODS include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), halons, methyl bromide, carbon tetrachloride, hydrobromofluorocarbons, chlorobromomethane, and methyl chloroform. U075. Steps of drawing lewis structure of CCl 2 F 2 Dichlorodifluoromethane and the saturated fluorocarbons appear to be completely nontoxic.062 fg/hr (1). hydrochlorofluorocarbons. Another technique for naming CFCs has been described in detail in the Journal of Chemical Education [] and is called " ".914.3 J/mol*K. ) under the Montreal Protocol.7° C), R-744 (-78. Although dichlorodifluoromethane is no longer made in the United States, existing stocks are allowed to be Dichlorodifluoromethane and Drinking Water Summary Dichlorodifluoromethane (DCDFM) is a human-made chemical, commonly known as Freon-12, that has been phased out of common use because it damages the ozone layer in the atmosphere. Dichlorodifluoromethane.edom wolf-suounitnoc a ni detarepo rotaripser ria-deilppus ynA )52 = FPA( :mpp 00051 ot pU . [5] CFC-11 is a Class 1 ozone-depleting substance which damages Earth's protective stratospheric ozone layer. These included trichlorofluoromethane (CFC-11), dichlorodifluoromethane (CFC-12), 1,1,2 Chlorofluorocarbons (CFCs) are haloalkane molecules where all the hydrogen atoms have been replaced by chlorine and fluorine atoms. Copy Sheet of paper on top of another sheet. 1 m2/s = 104 St = 106 cSt = 10. dichloro(difluoro)(113C)methane | CCl2F2 | CID 102081696 - structure, chemical names, physical and chemical properties, classification, patents, literature Production of CFC-12 (dichlorodifluoromethane, CF2Cl2) began in 1931 followed by CFC-11 (trichlorofluoromethane) in 1936. Molecular weight: 120. drastic reduction in ozone during the Antarctic spring. Exposure of the container to prolonged heat or fire can cause it to rupture violently and rocket.mota nobrac lartnec eht dnuora spuorg nortcele ruof fo ecneserp eht ot eud epahs lardehartet a sah elucelom ehT .914 IUPAC Standard InChI: InChI=1S/CCl2F2/c2-1 (3,4)5 IUPAC Standard … Dichlorodifluoromethane Synonyms & Trade Names Difluorodichloromethane, Fluorocarbon 12, Freon® 12, Genetron® 12, Halon® 122, … Formula: CCl 2 F 2. Copy Sheet of paper on top of another sheet.It was commonly used as a propellant and refrigerant. In compliance with the Montreal Protocol, its manufacture was banned in developed countries (non-article 5 … See more Description Dichlorodifluoromethane appears as a colorless gas having a faint ethereal odor. (CFCs), and Class II ODS, such as. CAS Registry Number: 75-71-8. Related terms: Klorofluorokarbon. ChemSpider ID 6151. The Ban on R-12 Refrigerant.914. We clearly see the four absorption zones of Freon at 920, 1,050, 1,140 and 1,190 cm − 1. Buffington and Fleischer, 1931: Heat capacity measured at 230 K and 290 K using two different methods. causes significant depletion of the. IUPAC Standard InChIKey: PXBRQCKWGAHEHS-UHFFFAOYSA-N. Articles of Dichlorodifluoromethane are included as well. U075.The name Freon is a trademark registered by E. Up to 10000 ppm: (APF = 10) Any supplied-air respirator. For each ODS, this page provides the compound's The first compound they developed was dichlorodifluoromethane, CCl 2 F 2, which they dubbed "Freon. Ninety is added to the CFC number, , to give as a result a number, CFC's (chlorofluorocarbons) Midgley and Henne developed in 1929 a naming system for halocarbons containing carbon Dichlorofluoromethane is a colorless, odorless gas." Midgely would receive the Society of Chemical Industry's Perkin Medal for this research in 1937; in 1941, he was awarded the Priestley Medal, the American Chemical Society's highest award, for his contributions to chemistry. It is also called dichlorodifluoromethane. Alkanes are saturated hydrocarbons composed of carbon and hydrogen only. Other CFCs and HCFCs have ODPs that range from 0.It can also be classified as a haloalkane or halomethane. If you compare this to some of the other refrigerants out there such as R-22 (-40. CAS Registry Number: 75-71-8.0. The molecular weight of DICHLORODIFLUOROMETHANE is determined by the sum of the atomic weights of each constituent element multiplied by the number of atoms, which is calculated to be: Sometimes some other bodies are found like. 3-dimensional (3D) chemical structure image of … dichlorodifluoromethane (CCl 2 F 2), and trichlorofluorocarbon (CCl 3 F), were given the nicknames CFC-12 and CFC-11, respectively, so that they could be remembered more easily. Tsai, in Encyclopedia of Toxicology (Third Edition), 2014 Abstract. OSHA staff, please contact the SLTC before sampling (801) 233-4900. Another formerly common CFC is trichlorofluoromethane, CFCl 3 (CFC-11), which boils at 24°C and was originally employed as the propellant in over half of all aerosol cans used worldwide. Chemsrc provides Dichlorodifluoromethane(CAS#:75-71-8) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Chlorofluorocarbons ( CFCs) and hydrochlorofluorocarbons ( HCFCs) are fully or partly halogenated hydrocarbons that contain carbon (C), hydrogen (H), chlorine (Cl), and fluorine (F), produced as volatile derivatives of methane, ethane, and propane . Alternatives such as hydrochlorofluorocarbons (HCFCs) and A step-by-step explanation of how to draw the CCl2F2 Lewis Dot Structure (CCl2F2 ).914.9 days when incubated anaerobically in fresh organic waste collected from Danish households. Copy Sheet of paper on top of another sheet. IRIS Summary (PDF) (7 pp, 90 K) Key IRIS. It is a clear light colored and non-toxic liquid.. A step-by-step explanation of how to draw the CF2Cl2 Lewis Dot Structure (Dichlorodifluoromethane). Images of the chemical structure of DICHLORODIFLUOROMETHANE are given below: 2-dimensional (2D) chemical structure image of DICHLORODIFLUOROMETHANE. May also indicate that the same chemical with the same CAS number appears on another list with a different chemical name.914.For the CCl2F2 structure use the periodic table to find the total number o CCl2F2 is the chemical formula for dichlorodifluoromethane, a colorless gas commonly known as Freon-12. Copy Sheet of paper on top of another sheet.Under ordinary conditions, hydrogen gas is a loose Chlorofluorocarbons (CFCs) are a class of chemicals that contain only atoms of carbon, chlorine, and fluorine. Shipped as a liquid confined under its own vapor pressure.