Difluoroethane

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Difluoroethane

Chemical name	1,1-difluoroethane
Other names	Freon 152A ethylidene difluoride ethylene fluoride RTECS KI1410000
Chemical formula	C₂H₄F₂
Molecular mass	66.05 g/mol
CAS number	[75-37-6]
Density	2.7014 g/L @ 25 °C
Melting point	-117 °C
Boiling point	-24.9 °C
SMILES	FC(F)C
Disclaimer and references

Difluoroethane, also known as R-152A, is a chemical compound composed of carbon, hydrogen, and fluorine. Its molecular formula is C₂H₄F₂.

At standard temperature and pressure, it is a colourless gas. It is classified as a halogenated aliphatic. It is used for refrigeration (but is being phased out) and as an aerosol propellant. It is most commonly found in electronic cleaning products, and many consumer aerosol products that must meet stringent VOC requirements, but has recently been abused by children inhaling the substance and causing brain damage, e.g Dust-Off.

1 Physical information
2 Safety
- 2.1 Effects
3 See also
4 External link

[edit] Physical information

Vapour pressure: 4020 mmHg/5360 hPa @ 21.1 °C
Vapour density (air=1): 2.28 @ 25 °C
Density: 2.7014 g/L @ 25 °C
Water solubility: 0.54% @ 0 °C
Viscosity: 0.00887 cP @ 25 °C

[edit] Safety

Major health hazards: central nervous system depressant.
Major physical hazards: Flammable gas. May cause flash fire.
When combusted, decomposes into hydrogen fluoride and carbon monoxide, both of which are dangerous:

2 C₂H₄F₂ + 3 O₂ → 4 CO + 4 HF + 2 H₂O

[edit] Effects

Inhalation:
- Short term: symptoms of drunkenness, suffocation
- Long term: brain damage
Skin contact:
- Short term: blisters, frostbite
- Long term: no data
Eye contact:
- Short term: irritation, blurred vision
- Long term: blindness
Ingestion:
- Short term: frostbite
- long term: no data