Volatile, clear, colorless liquid or vapor.
Gel inhibitor in olefin polymerization.
Registry Numbers and Inventories.
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
1260 (25 C)
Vapor density (air=1)
0.676 g/cm3 (0 C)
Solubility in water
1.4205 (1 C)
Heat of fusion
Heat of vaporization
Heat of combustion
Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate protective gloves, clothing and goggles. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.
Wear positive pressure self-contained breathing apparatus (SCBA).
Make no contact with the spilled material. ELIMINATE all ignition sources, combustibles and ground all equipment. Take up with sand or other noncombustible absorbent material and place into containers for later disposal.
1,2-butadiene reacts rapidly with ozone under standard laboratory conditions (-78 C in methanol) to produce carbon monoxide, acetaldehyde, some peroxidic compounds, and acetic acid.
Upper exp. limit, %
Lower exp. limit, %
Extinguish fire with flooding quantities of water or use dry chemical or carbon dioxide.
A dangerous fire hazard.
Vapors from liquefied gas are initially heavier than air and spread along ground. Vapors may travel to source of ignition and flash back. Containers may explode when heated.
Animal studies have shown mild anesthesia at 150,000 to 200,000 ppm. 250,000 Ppm has caused death by respiratory paralysis. Drowsiness and fatigue have been reported in workers exposed to high concentrations. This agent is a CNS depressant. Malformations have been seen in rats.
Respiratory paralysis resulting in death has occurred in animals. Coughing has been reported from higher but unspecified exposure concentrations in humans. Asphyxiation can occur.
Respiratory paralysis resulting in death has occurred in animals. Coughing has been reported from higher but unspecified exposure concentrations in humans.
Splash contact may cause mild to moderate skin irritation or frostbite.
May cause irritation.
The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation. Activated charcoal activated charcoal binds most toxic agents and can decrease their systemic absorption if administered soon after ingestion. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.