ICSC 0396 - n-BUTENE

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

n-BUTENE

ICSC: 0396
_{March 1999}

n-Butylene
1-Butene
Ethylethylene

CAS No: 106-98-9
RTECS No:
UN No: 1012
EC No: 601-012-00-4

C₄H₈ / CH₃CH₂CH=CH₂
Molecular mass: 56.1

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Extremely flammable.	NO open flames, NO sparks, and NO smoking.	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.
EXPLOSION	Gas/air mixtures are explosive.	Closed system, ventilation, explosion-proof electrical equipment and lighting.	In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position.

EXPOSURE
Inhalation	Suffocation.	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.	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 take to a doctor.
Ingestion		Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Evacuate danger area! Ventilation. Remove all ignition sources. Personal protection: complete protective clothing including self-contained breathing apparatus.	F+ Symbol R: 12 S: (2-)9-16-33 Note: C UN Hazard Class: 2.1

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-20S1012 or 20G2F NFPA Code: H1; F4; R0	Fireproof. Cool. Ventilation along the floor.

IMPORTANT DATA
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 causing fire and explosion hazard. 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.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
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

NOTES

Health effects of exposure to the substance have not been investigated.
Check oxygen content before entering area.
Card has been partly updated in October 2005. See section Emergency Response.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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