2,2'-Azobis(2-methylpropionitrile), abbreviated as AIBN, is a white crystalline or crystalline powder, insoluble in water, soluble in ether, methanol, ethanol, propanol chloroform, dichloroethane, ethyl acetate, benzene, etc., mostly oil-soluble agent.
Decomposes on heat, melting point 100 ° C -104 ° C. It should be stored in a dry place at 20 °C. Nitrogen and nitrogen-containing (CH2)2-C-CN-based organic cyanide are liberated in the presence of water. The decomposition temperature is 64 °C. Slow decomposition at room temperature, rapid decomposition at 100 ° C, can cause an explosion of fire, flammable, toxic. Nitrogen and organic cyanide are released, which is more harmful to humans.
2,2'-Azobis(2-methylpropionitrile) is an oil-soluble azo initiator. The azo initiator is stable in reaction, is a first-order reaction, has no side reactions, and is relatively well controlled, so it is widely used in the research and production of polymers. For example, vinyl chloride, vinyl acetate, acrylonitrile and other monomer polymerization initiators, can also be used as polyvinyl chloride, polyolefin, polyurethane, polyvinyl alcohol, acrylonitrile and butadiene and styrene copolymer, polyisocyanate, polyacetic acid A foaming agent such as vinyl ester, polyamide or polyester. In addition, it can also be used in other organic synthesis.
Mainly facing the industry: polyvinyl alcohol, vinylon, polyether, polymer polyols, foaming of fishing gear floats, etc.