ICSC 0396 - n-BUTENE

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n-BUTENE	ICSC: 0396 (March 1999)
Ethylethylene n-Butylene 1-Butene

CAS #: 106-98-9

UN #: 1012

EC Number: 203-449-2

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Extremely flammable. Gas/air mixtures are explosive.	NO open flames, NO sparks and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting.	Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out. In other cases extinguish with powder, carbon dioxide. In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position.


	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Suffocation.	Use ventilation.	Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
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	ON CONTACT WITH LIQUID: FROSTBITE.	Wear face shield 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
Evacuate danger area! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. Remove all ignition sources.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 2.1
STORAGE
Fireproof. Cool. Ventilation along the floor.
PACKAGING

n-BUTENE

ICSC: 0396

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance ODOURLESS COLOURLESS COMPRESSED LIQUEFIED GAS. Physical dangers The gas is heavier than air and may travel along the ground; distant ignition possible. Chemical dangers The substance may polymerize. Reacts violently with oxygen and oxidants. This generates fire and explosion hazard.	Formula: C₄H₈ / CH₃CH₂CH=CH₂ Molecular mass: 56.1 Boiling point: -6°C Melting point: -185°C Solubility in water: none Vapour pressure, kPa at 21°C: 464 Relative vapour density (air = 1): 1.93 Flash point: Flammable gas Auto-ignition temperature: 385°C Explosive limits, vol% in air: 1.6-10.0

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
ODOURLESS COLOURLESS COMPRESSED LIQUEFIED GAS.

Physical dangers
The gas is heavier than air and may travel along the ground; distant ignition possible.

Chemical dangers
The substance may polymerize. Reacts violently with oxygen and oxidants. This generates fire and explosion hazard.

Formula: C₄H₈ / CH₃CH₂CH=CH₂
Molecular mass: 56.1
Boiling point: -6°C
Melting point: -185°C
Solubility in water: none
Vapour pressure, kPa at 21°C: 464
Relative vapour density (air = 1): 1.93
Flash point: Flammable gas
Auto-ignition temperature: 385°C
Explosive limits, vol% in air: 1.6-10.0

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.	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.

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
TLV: 250 ppm as TWA

ENVIRONMENT

NOTES
Health effects of exposure to the substance have not been investigated. Check oxygen content before entering area.

ADDITIONAL INFORMATION

EC Classification
Symbol: F+; R: 12; S: (2)-9-16-33; Note: C

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