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Specialty Chemicals Home > Water soluble Azo initiators > VA-046B



  • non-halogen water-soluble azo initiator having low-temperature decomposition
  • soluble in water, in methanol
  • 10 hour half-life decomposition temperature, 47C

chemical name

2,2'-Azobis[2-(2-imidazolin-2-yl)propane]disulfate dihydrate

CAS NO. 325477-32-5
Molecular weight = 482.54


Appearance white powder
Melting point 119-133C
Activation energy 1.27X105 J/mol
10 hour half-life decomposition temperature 47C(in water)
Solubility freely soluble in methanol or water
insoluble in acetone

packaging and storage condition

  • 5kg
  • Keep under 25C

related regulations and safety data

TSCA inventory not listed (see section 15)
EINECS No. not listed
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 -
Oral toxicity data
Irritation data -

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