1,1-DIFLUOROETHANE (ICSC)

1,1-DIFLUOROETHANE	ICSC: 1729

Date of Peer Review: March 2009

Ethane, 1,1,-difluoro-
Ethylene fluoride
HFC-152a
Freon 152a

CAS #	75-37-6	C₂H₄F₂
RTECS #	KI1410000	Molecular mass: 66.1
UN #	1030
EC/EINECS #	200-866-1

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Extremely flammable. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames, NO sparks, and NO smoking.	Carbon dioxide, powder, water spray.
EXPLOSION	Gas/air mixtures are explosive.	Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding). Use non-sparking handtools.	In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position.

EXPOSURE
Inhalation	Dizziness. Drowsiness. Unconsciousness. Suffocation.	Ventilation.	Fresh air, rest.
Skin	ON CONTACT WITH LIQUID: FROSTBITE.	Cold-insulating gloves.	ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention.
Eyes	See Skin.	Safety goggles or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion		Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL

PACKAGING & LABELLING

Evacuate danger area! Consult an expert! Ventilation. Remove all ignition sources. Personal protection: chemical protection suit including self-contained breathing apparatus. Remove vapour with fine water spray. NEVER direct water jet on liquid.

EMERGENCY RESPONSE

STORAGE

Fireproof. Separated from incompatible materials. Keep in a well-ventilated room.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities Š IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK

1,1-DIFLUOROETHANE

ICSC: 1729

IMPORTANT DATA

PHYSICAL STATE; APPEARANCE:
COMPRESSED LIQUEFIED GAS, COLOURLESS, ODOURLESS.

PHYSICAL DANGERS:
The gas mixes well with air, explosive mixtures are formed easily. As a result of flow, agitation, etc., electrostatic charges can be generated.

CHEMICAL DANGERS:
The substance decomposes rapidly on heating and on burning , producing toxic fumes and irritating fumes, including hydrogen fluoride, carbon monoxide and phosgene. Reacts with amines, reducing agents, strong oxidants, and epoxides.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established. MAK not established.

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

INHALATION RISK:
On loss of containment this gas can cause suffocation by lowering the oxygen content of the air in confined areas.

EFFECTS OF SHORT-TERM EXPOSURE:
Rapid evaporation of the liquid may cause frostbite. The substance may cause effects on the cardiovascular system , resulting in cardiac disorders. Exposure at high levels may result in unconsciousness.

PHYSICAL PROPERTIES

Boiling point: -24.7°C
Melting point: -117°C
Density: 0.91 g/cmł(liquid)
Density: 3.04 kg/młat 0°C (gas)
Solubility in water, g/100 ml at 25°C: 0.02 (very poor)
Vapour pressure, kPa at 20°C: 516
Relative vapour density (air = 1): 2.3

Flash point: Flammable Gas
Auto-ignition temperature: 455°C
Explosive limits, vol% in air: 3.7-18
Octanol/water partition coefficient as log Pow: 0.75

ENVIRONMENTAL DATA

NOTES

Turn leaking cylinder with the leak up to prevent escape of gas in liquid state. Check oxygen content before entering area. Common name: Refrigerant gas R 152a.

ADDITIONAL INFORMATION

LEGAL NOTICE

Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information

Š IPCS, CEC 2005

    See Also:
       Toxicological Abbreviations