Azo polymerization initiators


CAS : 2094-98-6

high-temperature type oil soluble

Plastics manufacturing


Since the 10-hour half-life temperature is as high as 88 ℃, V-40 can be used to decrease residual monomer concentration when used with other initiators, such as V-65. This is an oil-soluble azo polymerization initiator which has a high solubility in various organic solvents. The decomposition product of V-40 has a unique characteristic of low volatility, therefore it could be useful for cow-voc paint applications.

  • Oil-soluble azo initiator having high decomposition temperature
  • Freely soluble in various organic solvents
  • 10 Hour half-life decomposition temperature: 88℃
Structural formula of 1,1'-Azobis(cyclohexane-1-carbonitrile)
Chemical name 1,1'-Azobis(cyclohexane-1-carbonitrile)
CAS RN® 2094-98-6
Molecular weight 244.34
Molecular formula NCC6H10N=NC6H10CN
Synonyms ACHN
Azo-1-cyanocyclohexane; ACCN

Physical characteristics

white crystals
Melting point/freezing point 110-120℃
10hour half-life decomposition temperature 88℃(in toluene)
Activation energy 154.1 kJ/mol
Frequency factor (ln A) 40.5

water : practically insoluble.
acetone, chloroform, benzene : freely soluble.
ethanol : soluble.
petroleum ether : practically insoluble

SADT 80℃

*SADT: Self-accelerating decomposition temperature

Packaging & Storage conditions

Packaging 20kg / 500g
Storage conditions keep under 20℃

Related laws and regulations

TSCA Listed
REACH 01-2120795117-47-0000

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