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Butene-1

C4H8-1

CAS:106-98-9



n-BUTENE ICSC: 0396

n-Butylene 
1-Butene 
Ethylethylene 
CAS # 106-98-9 C4H8 / CH3CH2CH=CH2
RTECS # Molecular mass: 56.1
UN # 1012
EC Index # 601-012-00-4
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. 
EU Classification 
Symbol: F+
R: 12
S: (2-)-9-16-33
Note: [C]
UN Classification 
UN Hazard Class: 2.1

EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-20S1012 or 20G2F 
NFPA Code: H1; F4; R0; 
Fireproof. Cool. Ventilation along the floor. 
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 � IPCS, CEC 2005 

SEE IMPORTANT INFORMATION ON BACK
n-BUTENE ICSC: 0396
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
Boiling point: -6℃
Melting point: -185℃
Solubility in water: none
Vapour pressure, kPa at 21℃: 464
Relative vapour density (air = 1): 1.93
Flash point: Flammable Gas
Auto-ignition temperature: 385℃
Explosive limits, vol% in air: 1.6-10.0
ENVIRONMENTAL DATA

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. 
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
� IPCS, CEC 2005
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