Agent Name

Difluoromethane

CAS Number

75-10-5

Formula

C-H2-F2

Major Category

Solvents

Synonyms

Carbon fluoride hydride; Freon 32; Genetron 32; HFC 32; Khladon 32 [Russian]; Methylene difluoride; R 32 (refrigerant); Methane, difluoro-; [ChemIDplus] UN3252

Category

Chlorofluorocarbons

Description

Colorless gas; [Merck Index] Colorless liquefied gas with a faint ethereal odor; [MSDSonline]

Sources/Uses

Used as a refrigerant and to make other chemicals; [Hawley]

Comments

Evaporating liquid can cause frostbite; May cause asphyxiation without warning; [CAMEO] Evaporating liquid can cause frostbite; Inhalation of high concentrations can cause CNS depression and cardiac arrhythmias; In confined space spill, may displace air and act as simple asphyxiant; [MSDSonline]

Exposure Assessment
WEEL

1000 ppm

Lethal Concentration

LC50 (rat) = 1,890,000 mg/m3/4h

Adverse Effects
Neurotoxin

CNS Solvent Syndrome

Other Poison

Simple Asphyxiant

Links to Other NLM Databases
Toxicity Information

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Chemical Information

Search ChemIDplus

Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent: