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NIOSH

n-BUTENE

ICSC: 0396

n-Butylene
1-Butene
Ethylethylene
C4H8 / CH3CH2CH=CH2
Molecular mass: 56.1
ICSC # 0396 		CAS # 106-98-9
UN # 1012
EC # 601-012-00-4
March 25, 1999 Validated

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

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Ventilation. Remove all ignition sources. Personal protection: complete protective clothing including self-contained breathing apparatus.
Fireproof. Cool. Ventilation along the floor.

Note: C
F+ symbol
R: 12
S: 2-9-16-33
UN Hazard Class: 2.1
ICSC: 0396 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

n-BUTENE

ICSC: 0396

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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.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

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

ENVIRONMENTAL
DATA


N O T E S

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.
Transport Emergency Card: TEC (R)-20S1012 or 20G2F

NFPA Code: H1; F4; R0;

ADDITIONAL INFORMATION



ICSC: 0396 n-BUTENE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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