2,2'-azobisisobutyronitrile

2,2′-azobisisobutyronitrile

[¦tü ¦tü‚prīm ‚a·zō·bī‚ī·sō‚byüd·ə·rə′nī·trəl] (organic chemistry) C8H12N4 Crystals that decompose at 107°C; soluble in methanol and in ethanol; used as an initiator of free radical reactions and as a blowing agent for plastics and elastomers.