ICSC 1729 - 1,1-DIFLUOROETHANE

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1,1-DIFLUOROETHANE	ICSC: 1729 (March 2009)
HFC-152a Freon 152a Ethane, 1,1,-difluoro- Ethylene fluoride Refrigerant gas R 152a

CAS #: 75-37-6

UN #: 1030

EC Number: 200-866-1

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


	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Dizziness. Drowsiness. Unconsciousness. Suffocation.	Use 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.	Wear 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 refer for medical attention.
Ingestion		Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Ventilation. Remove vapour with fine water spray. NEVER direct water jet on liquid.	According to UN GHS Criteria DANGER Extremely flammable gas Contains gas under pressure; may explode if heated Transportation UN Classification UN Hazard Class: 2.1
STORAGE
Fireproof. Separated from incompatible materials. Keep in a well-ventilated room.
PACKAGING

1,1-DIFLUOROETHANE

ICSC: 1729

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS ODOURLESS COMPRESSED LIQUEFIED GAS. Physical dangers The gas mixes well with air, explosive mixtures are easily formed. As a result of flow, agitation, etc., electrostatic charges can be generated. Chemical dangers Decomposes rapidly on heating and on burning. This produces toxic and irritating fumes including hydrogen fluoride and carbon monoxide. Reacts with amines, reducing agents, strong oxidants and epoxides.	Formula: C₂H₄F₂ Atomic mass: 66.1 Boiling point: -24.7°C Melting point: -117°C Density (for liquid): 0.91 g/cm³ Density (at 0°C): 0.00304 g/cm³ Solubility in water, g/100ml 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

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS ODOURLESS COMPRESSED LIQUEFIED GAS.

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

Chemical dangers
Decomposes rapidly on heating and on burning. This produces toxic and irritating fumes including hydrogen fluoride and carbon monoxide. Reacts with amines, reducing agents, strong oxidants and epoxides.

Formula: C₂H₄F₂
Atomic mass: 66.1
Boiling point: -24.7°C
Melting point: -117°C
Density (for liquid): 0.91 g/cm³
Density (at 0°C): 0.00304 g/cm³
Solubility in water, g/100ml 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

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation. Effects of short-term exposure Rapid evaporation of the liquid may cause frostbite. The substance may cause effects on the cardiovascular system. This may result in cardiac disorders. Exposure at high levels could cause unconsciousness.	Inhalation risk On loss of containment this substance can cause suffocation by lowering the oxygen content of the air in confined areas. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation.

Effects of short-term exposure
Rapid evaporation of the liquid may cause frostbite. The substance may cause effects on the cardiovascular system. This may result in cardiac disorders. Exposure at high levels could cause unconsciousness.

Inhalation risk
On loss of containment this substance can cause suffocation by lowering the oxygen content of the air in confined areas.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT

NOTES
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state. Check oxygen content before entering area.

ADDITIONAL INFORMATION

EC Classification

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