Azo polymerization initiators


CAS : 195520-32-2

non-nitrile high-temperature type oil soluble

Plastics manufacturing


VAm-110 is an oil-soluble azo polymerization initiator which is active in high temperatures, the 10-hour half-life temperature is as high as 110 ℃. This product has characteristics which show high solubility to different organic solvents.

  • Non-nitrile azo initiator having high decomposition temperature
  • Freely soluble in various organic solvents
  • 10 Hour half-life decomposition temperature: 110℃
Structural formula of 2,2'-Azobis(N-butyl-2-methylpropionamide)
Chemical name 2,2'-Azobis(N-butyl-2-methylpropionamide)
CAS RN® 195520-32-2
Molecular weight 312.46
Molecular formula C16H32N4O2

Physical characteristics

slightly yellow powder
Melting point/freezing point 65℃
10hour half-life decomposition temperature 110℃(in ethyl benzene)
Activation energy 141.1 kJ/mol
Frequency factor (ln A) 33.38

water : insoluble.
methanol, ethyl acetate, toluene, methyl ethyl ketone : freely soluble.

SADT 70℃

*SADT: Self-accelerating decomposition temperature

Packaging & Storage conditions

Packaging 5kg / 500g
Storage conditions keep under 25℃

Related laws and regulations

TSCA Not Listed
EINECS Not Listed
REACH the substance is exempted from the obligation to register

Here, you can calculate the ‘residue rate’, ‘decomposition reaction time’, and ‘temperature during the decomposition reaction’ of azo polymerization initiators.

Image of Azo Residue Rate Calculation Tool