|CAS #: 624-64-6|
| UN #: 1012
|EC Number: 210-855-3
|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. Prevent build-up of electrostatic charges (e.g., by grounding) if in liquid state. Use non-sparking handtools. Flame arrester to prevent flash-back from burner to cylinder.||Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out. In other cases extinguish with water spray, dry powder, alcohol-resistant foam. In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position.|
|Inhalation||Dizziness. Unconsciousness. Suffocation.||Use ventilation, local exhaust or breathing protection.||Fresh air, rest. Artificial respiration may be needed. Refer immediately 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||See Skin.||Wear face shield.||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! Consult an expert! Personal protection: self-contained breathing apparatus. Remove all ignition sources. Shut off cylinder if possible. Ventilation. Isolate the area until the gas has dispersed. NEVER direct water jet on liquid.||
According to UN GHS Criteria
DANGERExtremely flammable gas
Contains gas under pressure; may explode if heated
|Fireproof. Store outside or in a separate well-ventilated building.|
|PHYSICAL & CHEMICAL INFORMATION|
Physical State; Appearance
Formula: C4H8 / CH3-HC=CH-CH3
|EXPOSURE & HEALTH EFFECTS|
Routes of exposure
Effects of short-term exposure
Effects of long-term or repeated exposure
|OCCUPATIONAL EXPOSURE LIMITS|
|TLV: 250 ppm as TWA|
|Check oxygen content before entering area.
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
The recommendations on this Card also apply to cis-2-butene (ICSC 0397).
Other CAS number: 107-01-7 (2-butene cis and trans).
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See Also: Toxicological Abbreviations