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DICHLORODIFLUOROMETHANE

CAS NUMBER: 75-71-8

EC NUMBER: 200-893-9 

MOLECULAR FORMULA: CCl2F2

MOLECULAR WEIGHT: 120.91

IUPAC NAME: dichloro(difluoro)methane

Dichlorodifluoromethane is a chemical compound with the chemical formula CCl2F2 that is composed of two parts chlorine and two parts fluorine linked to a central carbon atom via single molecular bonds. 
Dichlorodifluoromethane is form by the reaction of carbon tetrachloride and hydrogen fluoride.

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. 
Complying with the Montreal Protocol, its manufacture was banned in developed countries (non-article 5 countries) in 1996, and developing countries (article 5 countries) in 2010 out of concerns about its damaging effect on the ozone layer.
Dichlorodifluoromethane's only allowed usage is as fire retardant in submarines and aircraft. 
Dichlorodifluoromethane is soluble in many organic solvents. 
R-12 cylinders are colored white.

Preparation:
Dichlorodifluoromethane can be prepared by reacting carbon tetrachloride with hydrogen fluoride in the presence of a catalytic amount of antimony pentachloride:
CCl4 + 2HF → CCl2F2 + 2HCl
This reaction can also produce trichlorofluoromethane (CCl3F), chlorotrifluoromethane (CClF3) and tetrafluoromethane (CF4)

Use as an Aerosol:
The use of chlorofluorocarbons as aerosols in medicine, such as USP-approved salbutamol, has been phased out by the U.S. Food and Drug Administration. 
A different propellant known as hydrofluoroalkane, or HFA, which was not known to harm the environment, was chosen to replace it

Dichlorodifluoromethane is a cooling or freezing agent for consumer use. 
Dichlorodifluoromethane exists in the form of a colorless gas and has an odor that is faint and ethereal. 
Dichlorodifluoromethane is used as a refrigerant and aerosol spray propellant, sold under the name Freon-12. 
Dichlorodifluoromethane belongs to the family of organochlorides and is a chlorofluorocarbon halomethane (CFC). 
Several coating compounds used to prevent corrosion come in the form of aerosol substances that are sprayed onto metal surfaces requiring protection.

Dichlorodifluoromethane appears as a colorless gas having a faint ethereal odor. 
Dichlorodifluoromethane Shipped as a liquid confined under its own vapor pressure. 
Dichlorodifluoromethane Contacts with the unconfined liquid can cause frostbite. 
Both components are noncombustible. 
Dichlorodifluoromethane Can asphyxiate by the displacement of air. 
Exposure of the closed container to prolonged heat or fire can cause it to rupture violently and rocket.

Dichlorodifluoromethane is a colourless nonflammable gas easily liquefied by pressure
Dichlorodifluoromethane is used as a propellant in aerosols and fire extinguishers and as a refrigerant.

Dichlorodifluoromethane belongs to a family of compounds called the chlorofluorocarbons (CFCs) that consist of carbon, chlorine, and fluorine atoms in varying arrangements. 
Dichlorodifluoromethane  can be considered as derivatives of alkanes, organic compounds consisting of carbon and hydro gen only, in which all of the hydrogen atoms have been replaced by chlorine and/or fluorine atoms. 
Dichlorodifluoromethane is Very slightly soluble in water; soluble in alcohol and ether

Dichlorodifluoromethane is made by reacting carbon tetrachloride (CCl4) with hydrogen fluoride gas (H2F2) in the presence of a catalyst, usually antimony pentafluoride (SbF5). 
In this reaction, two of the chlorines present in carbon tetrachloride are replaced by two fluorines from hydrogen fluoride, producing dichlorodifluoromethane.

Dichlorodifluoromethane is used for many commercial applications: 
*as refrigerants for air conditioners and refrigerators
*as an aerosol propellant for hair sprays
*insecticides
*paints 
*adhesives
*cleaners
*as a foaming agent in the manufacture of shipping plastics. 

Dichlorodifluoromethane's relative nontoxicity made these materials useful for food preservation and even for chilling cocktail glasses. 
Some other former uses of the Freons® include the following:
-As a rocket propellant;
-In solvents used in the manufacture of paints and varnishes;
-In the preparation of frozen sections of tissue;
-For the freezing of foods as a method of preservation;
-In water purification systems;
-As an agent for detecting leaks

Dichlorodifluoromethane, also called FC-12
Dichlorodifluoromethane can be a colorless liquid or a gas. 
Dichlorodifluoromethane has an ether-like odor.

Dichlorodifluoromethane is used as a refrigerant gas in refrigerators and air conditioners. 
Dichlorodifluoromethane is also used in aerosol sprays, in plastics, and as an aid in detecting leaks. 

Dichlorodifluoromethane is an inert synthetic gas that is non-reactive
Dichlorodifluoromethane is non-toxic and a gas at room temperature.
Dichlorodifluoromethane belongs to a family of compounds called the chlorofluorocarbons that consist of carbon, chlorine, and fluorine atoms in varying arrangements. 
Dichlorodifluoromethane is made by reacting carbon tetrachloride with hydrogen fluoride gas in the presence of a catalyst, usually antimony pentafluoride. 

Dichlorodifluoromethane acts as an aerosol spray propellant, and liquid freezant (direct contact freezing agent for food) when compressed in an aerosol can. 
Dichlorodifluoromethane was used for air conditioners and refrigerators,as an aerosol propellant for hair sprays, insecticides, paints, adhesives, and cleaners,and as a foaming agent in the manufacture of shipping plastics
Dichlorodifluoromethane is soluble in many organic solvents

Dichlorodifluoromethane (R-12), usually sold under the brand name Freon-12, is a chlorofluorocarbon halomethane, commonly known as CFC
Dichlorodifluoromethane is used as a refrigerant and aerosol spray propellant

Dichlorodifluoromethane is an inert gas once widely used in refrigeration applications and the manufacture of certain medications. 
Dichlorodifluoromethane is an example of a chlorofluorocarbon (CFC) and is more commonly known under the name freon-12.
Dichlorodifluoromethane is naturally colorless and inert, with a faint odor. 

One of the widest historic uses of dichlorodifluoromethane was in cooling systems like air conditioning and refrigeration. 
The gas worked very well as a refrigerant, with a high degree of efficiency in well maintained systems. 
Additionally, manufacturers used dichlorodifluoromethane as a propellant in aerosol products like inhalers for asthma.

Dichlorodifluoromethane is a colorless gas usually sold under the brand name Freon-12
Dichlorodifluoromethane is used as a refrigerant and aerosol spray propellant.
Dichlorodifluoromethane is a colorless gas having a faint ethereal odor. 

Dichlorodifluoromethane Shipped as a liquid confined under its own vapor pressure. 
Dichlorodifluoromethane Contacts with the unconfined liquid can cause frostbite. 
Both components are noncombustible

Reactivity Profile:
The reaction of aluminum with various halogenated hydrocarbons produces a self-sustaining reaction with sufficient heat to melt aluminum pieces, examples of other halogenated hydrocarbons are fluorotrichloromethane, dichlorodifluoromethane, chlorodifluoromethane, tetrafluoromethane. 
The vigor of the reaction appears to be dependent on the combined degree of fluorination and the vapor pressure

Dichlorodifluoromethane is a direct contact freezing agent for foods. 
Refrigerant, aerosol propellant Dichlorodifluoromethane (R-12), usually sold under the brand name Freon-12, is a chlorofluorocarbon halomethane (CFC), used as a refrigerant and aerosol spray propellant.
Dichlorodifluoromethane is soluble in many organic solvents

Alternative Parents:    
-Organofluorides 
-Organochlorides 
-Hydrocarbon derivatives 
-Halomethanes 
-Alkyl fluorides 

Substituents:    
-Chlorofluorocarbon
-Halomethane
-Hydrocarbon derivative
-Organofluoride
-Organochloride
-Alkyl fluoride
-Aliphatic acyclic compound

Dichlorodifluoromethane is an inert synthetic gas that is non-reactive,non-toxic, and a gas at room temperature.
Dichlorodifluoromethane belongs to a family of compounds called chlorofluorocarbons that consist of carbon,chlorine, and fluorine atoms in varying arrangements.
Dichlorodifluoromethane's chemical formula is CCl2F2.
Dichlorodifluoromethane is made by reacting carbon tetrachloride with hydrogen fluoride gas in the presence of a catalyst, usually antimony pentafluoride.
Dichlorodifluoromethane is used as a refrigerant gas in refrigarators and air conditioners.

Dichlorodifluoromethane is also used in: 
-aerosol sprays
-in plastics
-as an aid in detecting leaks.

Dichlorodifluoromethane is known as CFC-12, also called R-12, or Freon-12. 
Dichlorodifluoromethane is a general name for Refrigerant-12. Freon is a trade name for DuPont. 
Dichlorodifluoromethane stands for chlorofl uorocarbons, which are nontoxic, nonfl ammable, synthetic chemicals containing atoms of carbon, chlorine, and fluorine.
Dichlorodifluoromethane use climbed steadily worldwide as it was incorporated in refrigeration and air conditioning, as well as being used as propellants, blowing agents, and solvents.

Dichlorodifluoromethane is a liquefied gas and exists as a liquid at room temperature when contained under its own vapor pressure, or as a gas when exposed to room temperature and atmospheric pressure. 
The liquid is practically odorless and colorless. 
The gas in high concentrations has a faint etherlike odor. 
Dichlorodifluoromethane is noncorrosive, nonirritating, and nonflammable. 

Ethereal odor at .20% by volume. 
Shipped as a compressed gas.
Dichlorotetrafluoroethane is a colorless, nonflammable liquefied gas with a faint, ethereal odor.
Dichlorodifluoromethane is a clear, volatile liquid at room temperature and atmospheric pressure. 
Dichlorodifluoromethane has a characteristic carbon tetrachloride-like odor and is nonirritating and nonflammable.

Dichlorodifluoromethane is prepared by the reaction of hydrogen fluoride with carbon tetrachloride in the presence of a suitable catalyst, such as polyvalent antimony. 
The Dichlorodifluoromethane formed is further purified to remove all traces of water and hydrochloric acid as well as traces of the starting and intermediate materials.
Dichlorodifluoromethane is also obtained by this process.
Dichlorotetrafluoroethane is prepared by the reaction of hydrogen fluoride with chlorine and perchloroethylene in the presence of a suitable catalyst such as polyvalent antimony.

Dichlorodifluoromethane is a colorless gas having a faint ethereal odor. 
Dichlorodifluoromethane Shipped as a liquid confined under its own vapor pressure. 
Dichlorodifluoromethane Contacts with the unconfined liquid can cause frostbite. 
Both components are noncombustible. 
Dichlorodifluoromethane Can asphyxiate by the displacement of air. 
Dichlorodifluoromethane Exposures of the closed container to prolonged heat or fire can cause Dichlorodifluoromethane to rupture violently and rocket.

Pharmaceutical Applications:
Dichlorodifluoromethane, dichlorotetrafluoroethane, and trichloromonofluoromethane are chlorofluorocarbon (CFC) aerosol propellants used in pharmaceutical formulations. 
They are no longer used in metered-dose inhaler (MDI) formulations, with few exceptions for existing MDIs.
Dichlorodifluoromethane is used as an aerosol propellant in MDIs, either as the sole propellant or in combination with dichlorotetrafluoroethane, trichloromonofluoromethane, or mixtures of these chlorofluorocarbons. 
Dichlorodifluoromethane may also be used as a propellant in an aerosolized sterile talc used for intrapleural administration and is also used alone in some MDIs containing a steroid.

Dichlorotetrafluoroethane is used in combination with dichlorodifluoromethane, and in several cases with dichlorodifluoromethane and trichloromonofluoromethane, as the propellant in metered-dose oral and nasal aerosols.
Dichlorodifluoromethane is used in combination with dichlorodifluoromethane as the propellant in metered-dose inhaler aerosols. It is also used in combination with dichlorotetrafluoroethane and dichlorodifluoromethane.
These three propellants have been blended to obtain suitable solubility characteristics for MDIs when formulated as solutions. They will produce suitable vapor pressures so that optimum particle-size distribution as well as suitable respiratory fractions may be achieved.
Blends of trichloromonofluoromethane and dichlorodifluoromethane (propellant 11/12) or propellant 11/114/12 produce vapor pressures of 103–484 kPa (15–70 psig) at 258℃, which adequately cover the range of pressures required to produce the proper particlesize distribution for satisfactory aerosol products. 
Dichlorodifluoromethane is unique among the chlorofluorocarbon propellants in that it is a liquid at room temperature and atmospheric pressure, and can be used to prepare a slurry with insoluble medicinal agents.

Dichlorodifluoromethane is a chemical compound with the chemical formula CCl2F2 that is composed of two parts chlorine and two parts fluorine linked to a central carbon atom via single molecular bonds. 
Dichlorodifluoromethane is form by the reaction of carbon tetrachloride and hydrogen fluoride.

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. 
Complying with the Montreal Protocol, its manufacture was banned in developed countries (non-article 5 countries) in 1996, and developing countries (article 5 countries) in 2010 out of concerns about its damaging effect on the ozone layer.
Dichlorodifluoromethane's only allowed usage is as fire retardant in submarines and aircraft. 

PHYSICAL PROPERTIES OF DICHLORODIFLUOROMETHANE:

-Molecular Weight: 120.91    

-XLogP3-AA: 2.3    

-Exact Mass: 119.9345117    

-Monoisotopic Mass: 119.9345117    

-Topological Polar Surface Area: 0 Ų

-Physical Description: Liquid

-Color: Colorless

-Form: Colorless gas

-Odor: ether-like odor in high concentration

-Boiling Point: -29.8 °C

-Melting Point: -158.0 °C

-Solubility: Insoluble

-Density: 1.35

-Vapor Density: 4.1

-Vapor Pressure: 4,850 mm Hg at 25 °C

-LogP: 2.16

-Henrys Law Constant: 0.34 atm-m3/mole

-Stability/Shelf Life: Stable up to 550 °C

-Autoignition Temperature: Not flammable

-Viscosity: 0.262 centipoise at 70 °F

-Corrosivity: Noncorrosive

-Heat of Vaporization: 20.1 kJ/mol at -29.8 °C

-Surface Tension: 9 dynes/cm

-Ionization Potential: 11.75 eV

-Triple point temperature (Tt): -157 °C (116 K)

-Triple point pressure (pt): 10 Pa (0.00010 bar)

-Critical temperature (Tc): 112 °C (385 K)

-Critical pressure (pc): 4.170 MPa (41.15 bar)

-Critical density (ρc): 4.789 mol.l-1

-Latent heat of vaporization (lv): 166.95 kJ.kg-1

-Specific heat capacity at constant pressure (Cp) at 30 °C: 74 J.mol-1.K-1

-Specific heat capacity at constant volume (Cv) at 30 °C: 65 J.mol-1.K-1

Dichlorodifluoromethane is soluble in many organic solvents. 
Dichlorodifluoromethane is an inert synthetic gas that is non-reactive,non-toxic, and a gas at room temperature.
Dichlorodifluoromethane belongs to a family of compounds called chlorofluorocarbons that consist of carbon,chlorine, and fluorine atoms in varying arrangements.

Dichlorodifluoromethane's chemical formula is CCl2F2.
Dichlorodifluoromethane is made by reacting carbon tetrachloride with hydrogen fluoride gas in the presence of a catalyst, usually antimony pentafluoride.
Dichlorodifluoromethane is an inert synthetic gas that is non-reactive

Dichlorodifluoromethane is a colorless gas usually sold under the brand name Freon-12
Dichlorodifluoromethane is used as a refrigerant and aerosol spray propellant.
Dichlorodifluoromethane is a colorless gas having a faint ethereal odor. 

Dichlorodifluoromethane is non-toxic and a gas at room temperature.
Dichlorodifluoromethane belongs to a family of compounds called the chlorofluorocarbons that consist of carbon, chlorine, and fluorine atoms in varying arrangements. 
Dichlorodifluoromethane is made by reacting carbon tetrachloride with hydrogen fluoride gas in the presence of a catalyst, usually antimony pentafluoride. 

CHEMICAL PROPERTIES OF DICHLORODIFLUOROMETHANE:

-Heavy Atom Count: 5    

-Formal Charge: 0    

-Complexity: 30.6    

-Isotope Atom Count: 0    

-Defined Atom Stereocenter Count: 0    

-Undefined Atom Stereocenter Count: 0    

-Defined Bond Stereocenter Count: 0    

-Undefined Bond Stereocenter Count: 0    

-Covalently-Bonded Unit Count: 1    

-Compound Is Canonicalized: Yes

-Hydrogen Bond Donor Count: 0    

-Hydrogen Bond Acceptor Count: 2    

-Rotatable Bond Count: 0

STORAGE OF DICHLORODIFLUOROMETHANE:

Dichlorodifluoromethane propellants are non-reactive and stable at temperatures up to 5508℃. Liquefied gas is stable when used as propellant
Dichlorodifluoromethane should be stored in a metal cylinder. should be stored in a cool environment.
Dichlorodifluoromethane should be stored in a dry place.

The Dichlorodifluoromethane container must be dry
Dichlorodifluoromethane should be kept tightly closed in a well-ventilated place.
Dichlorodifluoromethane should be stored under inert gas.

Dichlorodifluoromethane containers should always be kept tightly closed when not in use.
Dichlorodifluoromethane should be stored securely to minimize contact with moisture.
Dichlorodifluoromethane should be kept away from sparks or flames.

Dichlorodifluoromethane should be stored in a moisture-free environment.
Dichlorodifluoromethane should be stored at optimum temperatures.
Dichlorodifluoromethane should be kept away from reactive substances.

SYNONYMS:

Difluorodichloromethane
Ucon 12/halocarbon 12
Dwuchlorodwufluorometan
Diclorodifluometano
Refrigerant R12
Propellent 12
Dichlorodifluoromethane (NF)
Dichlorodifluoromethane [NF]
Chlorofluoromethane (CCl2F2)
dichloro(difluoro)methane
Genetron 12
Freon 12
Refrigerant 12
Halon
Eskimon 12
Frigen 12
Electro-CF 12
Methane, dichlorodifluoro-
Algofrene type 2
Isotron 2
Propellant 12
Arcton 6
Isotron 12
Arcton 12
Forane 12
CFC-12
Dymel 12
Ledon 12
Chlorofluorocarbon 12
Isceon 122
Freon F-12
Halon 122
Ucon 12
Halocarbon 12
Refrigerant R 12
Fluorocarbon-12
Freon-12
Fluorocarbon 12
Diclorodifluometano [Spanish]
Dwuchlorodwufluorometan [Polish]
Dichloro-difluoro-methane
Sterethox
dichlorodifluormethane
dichlorodifluoro-methane
Fron 12

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