Azodiisobutyronitrile, also known as 2,2 ` - dicyano-2,2 ` - azopropane; 2,2 ` - azobis (2-methylpropiononitrile): foaming agent Vazo, English Name: azodiisobutyronitrile; Azobisisobutyronitrile, abbreviated as AIBN, also known as v-60, structural formula and molecular formula: C₈H₁₂N₄

Relative molecular weight: 164.21, 10 hour half-life temperature: 65 ℃, density: 1.1 (20 ℃), melting point (℃): 102 ~ 104, maximum absorption peak: 345nm (ethanol). CAS No.: 78-67-1, white crystalline or crystalline powder, insoluble in water, soluble in ether, methanol, ethanol, propanol, chloroform, dichloroethane, ethyl acetate, benzene, etc., which decomposes when heated. It should be stored in a dry place at 20 ℃.

This product is widely used as an initiator for the polymerization of vinyl chloride, vinyl acetate, acrylonitrile and other monomers. It can also be used as a foaming agent for PVC, polyolefin, polyurethane, polyvinyl alcohol, acrylonitrile butadiene and styrene copolymer, polyisocyanate, polyvinyl acetate, polyamide and polyester. In addition, it can also be used in other organic synthesis. Hazard category: category 4.1 UN Code: 3234 packing category: II. Regulations and information regulations on the safety management of hazardous chemicals (issued by the State Council on February 17, 1987), rules for the implementation of the regulations on the safety management of hazardous chemicals (HLF [1992] No. 677), regulations on the safe use of chemicals in the workplace ([1996] LBF No. 423) and other regulations are aimed at the safe use, production, storage, transportation Relevant regulations have been made in terms of loading and unloading: the classification and marking of commonly used hazardous chemicals (GB 13690-92) classify the substance as class 4.1 flammable solid.

4. Technical specifications of azodiisobutyronitrile