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Specialty Chemicals Home > Water soluble Azo initiators > VA-044



  • non-nitrile azo initiator having low decomposition temperature.
  • soluble in water or methanol
  • 10 hour half-life decomposition temperature, 44C(in water)

chemical name


CAS NO. 27776-21-2
Molecular weight = 323.33


Appearance White-pale yellow crystals or crystalline powder
Melting point 188-193C
Activation energy
1.08X105 J/mol
10 hour half-life decomposition temperature 44C(in water)
Solubility freely soluble in water ( and above 30 g/ solvent 100 g )
insoluble in toluene or hexane

packaging and storage condition

  • 25kg , 5kgX4
  • Keep under 30C

related regulations and safety data

TSCA inventory listed
EINECS No. 248-655-3
Law concerning the Examination and Regulation of Manufacture, etc. of Chemical Substances existing chemical substances 5-5870
Occupational Health and Safety Law 8-(2)-1271
Mutation data

Reverse mutation assay in S.typhimuriun and E.coli;

Weak positive

Oral toxicity data
Irritation data primary skin irritation test negative

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