1,1-Difluoroethane
Agent Name
1,1-Difluoroethane
Alternative Name
Ethylidene difluoride
CAS Number
75-37-6
Formula
C2-H4-F2
Major Category
Solvents
Synonyms
Algofrene type 67; Difluoroethane; Dymel 152; Dymel 152A; Ethane, 1,1-difluoro-; Ethylene fluoride; Ethylidene difluoride; Ethylidene fluoride; FC 152a; Fluorocarbon 152a; Fr1030eon 152a; Genetron 100; Genetron 152a; HFC 152a; Halocarbon 152A; R 152a; Refrigerant 152a; [ChemIDplus] UN1030
Category
Chlorofluorocarbons
Description
Highly flammable, odorless gas shipped as a liquid under pressure; [CAMEO]
Sources/Uses
Used as a chemical intermediate, refrigerant, and propellant; [HSDB]
Comments
Liquefied gas can cause frostbite; Can displace air and cause asphyxiation; Hydrogen fluoride fumes may be released in a fire; [CAMEO] Causes narcosis at high concentrations; [Hawley] Halogenated alkanes are highly lipophilic; they cross the blood-brain barrier to produce CNS depression. [Klaassen, p. 726] Human volunteers were exposed to 500,000 ppm for several minutes; Impending loss of consciousness was reported; [AIHA]
Biomedical References
Exposure Assessment
Lethal Concentration
LC50 (mice) = 977,000 mg/m3/2H
ERPG-1
10,000 ppm
ERPG-2
15,000 ppm
ERPG-3
25,000 ppm
WEEL
1000 ppm
Adverse Effects
Neurotoxin
Acute solvent syndrome
Other Poison
Simple Asphyxiant
Diseases, Processes, and Activities Linked to This Agent
Diseases
Occupational diseases associated with exposure to this agent: