Propellants chlorodifluoroethane

Chlorodifluoroethane is a hydrochlorofluorocarbon (HCFC) aerosol propellant previously used in topical pharmaceutical formulations. However, it is no longer permitted for use in pharmaceutical formulations because its harmful effects on the environment. It was also generally used in conjunction with difluoroethane to form a propellant blend with a specific gravity of 1. Chlorodifluoroethane was also used in combination with chlorodifluoromethane and hydrocarbon propellants. Chlorodifluoroethane may be used as a vehicle for dispersions and emulsions. 

Chlorodifluoroethane is a nonreactive and stable material. The liquefied gas is stable when used as a propellant and should be stored in a metal cylinder in a cool, dry place. 

Chlorodifluoroethane is no longer permitted for use as an aerosol propellant in topical pharmaceutical formulations. It is generally regarded as an essentially nontoxic and nonirritant material. 

Difluoroethane is useful as an aerosol propellant in that it shows greater miscibility with water than some other fluorocarbons and when combined with chlorodifluoroethane will produce a mixture with a specific gravity of 1. For a discussion of the numerical nomenclature applied to this aerosol propellant, see Ghlorofluorocarbons. 

Propei . See Lactic acid Propellant 11. See Trichlorofluoromethane Propellant 12. See Dichlorodifluoromethane Propellant 22. See Chlorodifluoromethane Propellant 23. See Trifluoromethane Propellant 114. See 1,2-Dichlorotetrafluoroethane Propellant 142b. See 1,1,1-Chlorodifluoroethane Propellant 152a. See 1,1-Difluoroethane Propellant C-318. See Octafluorocyclobutane Prop-2-enal 2-Propenal. See Acrolein... 

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