Physical and chemical properties

Color and smell state: colorless gas, with 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, methanol, and easily soluble in acetone, ether, chloroform, etc.

Uses

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

Hazard category

2.1 Class flammable gas

Fire-fighting measures

It is flammable and can form 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 can 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 in 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 saline, and seek medical attention.

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

Packaging, storage, transportation

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