Physicochemical properties

Color and smell status: colorless gas, with a special weak aromatic smell  

Toxicity: Poisoning

Flammability: flammable

Density: 0.62

Boiling point: -4.4℃

Melting point: -108.9℃


Solubility: Slightly soluble in water, soluble in ethanol and methanol, easily soluble in acetone, ether, chloroform, etc.

Various code

CAS: 106-99-0 


EINECS: 271-039-0


Butadiene is the main raw material for the production of synthetic rubber (styrene butadiene rubber, butadiene rubber, nitrile rubber, neoprene)

Hazard category

2.1 Class flammable gas

Fire-fighting measures

It is flammable and can form an explosive mixture when mixed with air. Contact with heat, sparks, flames or oxidants is easy to burn and explode. In case of high heat, polymerization reaction may occur, releasing a lot of heat and causing container rupture and explosion accidents. The gas is heavier than air and can spread to a considerable distance at a lower place, and will ignite when it encounters a fire source.

Fire fighting method: cut off the gas source. If the gas source cannot be cut off, it is not allowed to extinguish the flame at the leak.

Extinguishing agent: water mist, foam, carbon dioxide, dry powder.

Emergency treatment

Skin contact: Take off contaminated clothing immediately, rinse with plenty of running water for at least 15 minutes, and seek medical attention.

Eye contact: Lift the eyelid, rinse with running water or normal saline, and seek medical attention.

Inhalation: quickly leave the scene to a place with fresh air. Keep the airway unobstructed. If breathing is difficult, give oxygen. If breathing stops, give artificial respiration immediately. Seek medical attention.

Packaging, storage, transportation

steel gas cylinders, the safety helmet on the steel cylinder must be worn when transported in cylinders to prevent rolling. The transportation vehicles should be equipped with corresponding types and quantities of fire-fighting equipment during transportation. Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat sources. The storage temperature should not exceed 30°C. It should be stored separately from oxidizers, halogens, etc., and avoid mixed storage. Use explosion-proof lighting and ventilation facilities. It is forbidden to use mechanical equipment and tools that are prone to sparks. The storage area should be equipped with leakage emergency treatment equipment.


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