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768375 Sigma-Aldrich

Azobisisobutyronitrile

12 wt. % in acetone

Synonym: α,α,′-Azoisobutyronitrile solution, 2,2′-Azobis(2-methylpropionitrile) solution, AIBN solution, radical initiator

  • CAS Number 78-67-1

  • Empirical Formula (Hill Notation) C8H12N4

  • Molecular Weight 164.21

  •  MDL number MFCD00013808

  •  PubChem Substance ID 329767372

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Properties

Related Categories Azo Compounds, Free Radical Initiators, Materials Science, Polymer Science, Polymerization Initiators,
Quality Level   100
concentration   12 wt. % in acetone
refractive index   n20/D 1.368
density   0.808 g/mL at 25 °C
storage temp.   2-8°C
SMILES string   CC(C)(\N=N\C(C)(C)C#N)C#N
InChI   1S/C8H12N4/c1-7(2,5-9)11-12-8(3,4)6-10/h1-4H3/b12-11+
InChI key   OZAIFHULBGXAKX-VAWYXSNFSA-N

Description

General description

Azobisisobutyronitrile (AIBN) is an azo-compound and is widely used as a free radical initiator. This compound has labile carbon-nitrogen covalent bond which undergoes homolytic scission under thermal, chemical or photochemical conditions producing free radicals. They are useful in many reactions like halogenation, polymerisation of vinyl monomers, grafting reactions, curing of rubbers and unsaturated polymers and cross-linking of polyolefins.

Application

• Used as an initiator in the synthesis of highly cross-linked Poly(divinylbenzene) (PDVB) polymers.
• Used as an initiator in the polymerization process of 2-hydroxyethyl methacrylate (HEMA).

Packaging

100, 500 mL in glass bottle

Features and Benefits

Decomposes unimolecularly at good rates without much variation from one solvent to another.

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
Target organs 
Central nervous system
Supplemental Hazard Statements 
EUH044 - EUH066
RIDADR 
UN1090 - class 3 - PG 2 - Acetone, solution
WGK Germany 
WGK 2
Flash Point(F) 
1.4 °F
Flash Point(C) 
-17 °C

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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