1,1-Difluoroethane

1,1-Difluoroethane[1]
IUPAC name	1,1-Difluoroethane
Other names	difluoroethane Freon 152a ethylidene difluoride ethylidene fluoride HFC-152a R-152a
Identifiers
CAS number	75-37-6
RTECS number	KI1410000
SMILES	FC(F)C
Properties
Molecular formula	C2H4F2
Molar mass	66.05 g/mol
Density	2.7014 g/L @ 25 °C
Melting point	-117 °C, 156 K, -179 °F
Boiling point	-25 °C, 248 K, -13 °F
Solubility in water	0.54% @ 0 °C
Vapor pressure	4020 mmHg/536 kPa @ 21.1 °C 5.1 bar/510 kPa @ 20 °C
Viscosity	0.00887 cP (8.87 µPa·s) @ 25 °C
Hazards
MSDS	MSDS for 1,1-difluoroethane
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references

1,1-Difluoroethane, also called simply difluoroethane, R-152a, or HFC-152a, is a chemical compound composed of carbon, hydrogen, and fluorine. Its molecular formula is C₂H₄F₂.

At standard temperature and pressure, it is a colorless gas. It is classified as a halogenated aliphatic. In use as a refrigerant, it has a low global warming potential, and has recently been approved for use in automobile applications as an alternative to R-134a.^[2] It is also commonly found in electronic cleaning products, and many consumer aerosol products that must meet stringent VOC requirements.

Difluoroethane is flammable, and will produce both hydrogen fluoride and carbon monoxide if burned. Hydrogen fluoride, in contact with moisture, will create hydrofluoric acid, which is extremely dangerous to humans. Carbon monoxide, upon inhalation, will act as a persistent asphyxiant.

[edit] See also

• List of refrigerants
• Canned air

[edit] References