Azobis(isobutyronitrile)

Synonyms

2,2'-Azobisisobutyronitrile; 2,2'-Azobis(2-methylpropanenitrile); 2,2'-Azobis(2-methylpropionitrile); 2,2'-Azobis(isobutyronitrile); 2,2'-Azodiisobutyronitrile; 2,2'-Dicyano-2,2'-azopropane; 2,2'-Dimethyl-2,2'-azodipropionitrile; AIBN; Aceto AZIB; Aivn; AZDH; Azobisisobutylonitrile; Azobisisobutyronitrile; ChKhZ 57; Genitron; Pianofor An; Poly-Zole AZDN; Porofor 57; Porofor N; Porophor N; Propanenitrile, 2,2'-azobis(2-methyl-; Propionitrile, 2,2'-azobis(2-methyl-; VAZO 64; Vazo; alpha,alpha'-Azodiisobutyric acid dinitrile; alpha,alpha'-Azodiisobutyronitrile; [ChemIDplus] UN3234

Category

Nitriles

Description

White solid; [ICSC] Fine white crystals; [MSDSonline]

Sources/Uses

Used as blowing agent (elastomers and plastics), catalyst (vinyl polymerizations), curing agent (unsaturated polyester resins), and fumigant (when heated); [HSDB]

Comments

Forms hydrogen cyanide in the body; [Merck Index] Decomposed by warming forming toxic fumes such as tetramethylsuccinonitrile and cyanide; May decompose explosively from heating, shock, friction, or concussion; May cause CNS and liver effects; [ICSC] May form explosive mixture of dust in air; May self-decompose or self-ignite from heat, chemical reaction, or impact; [CAMEO] Effects in high-dose animal studies include toxicity to liver and kidneys; [eChemPortal: SIDSUNEP] Highly flammable; May explode from shock, friction, fire, or other source of ignition; May cause irritation; Targets the CNS, liver, and kidneys; [MSDSonline] See "NITRILES."

Biomedical References

0.0067 mm Hg

LC (rat) > 12,000 mg/m3/4h

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Self-reactive solid type C, temperature controlled." VP from ChemIDplus;

may ignite at ambient temp

Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Yes

Other Poison

Chemical Asphyxiant

Processes

Industrial Processes with risk of exposure:

• Plastic Composites Manufacturing