Azo polymerization initiators

V-501

CAS : 2638-94-0

Non-halogen water-soluble

Plastics manufacturing

Photocurable

V-501 is a nitrile-based water-soluble azo polymerization initiator, having a carboxyl group at the end. By introducing carboxyl group at polymer, post-polymerization mddification can be achieved.

  • Non-halogen water-soluble azo initiator
  • soluble in hot water or methanol
  • 10 Hour half-life decomposition temperature: 63℃ (DMF)
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structural formula of 4,4'-Azobis(4-cyanovaleric acid)
Chemical name 4,4'-Azobis(4-cyanovaleric acid)
CAS RN® 2638-94-0
Molecular weight 280.28
Molecular formula C12H16N4O4
Synonyms ACVA, ABCVA
4,4'-Azobis(4-cyanopropionic acid); ABCPA

Physical characteristics

Color
Appearance

white
powder
Melting point/freezing point 120-123(dec.) °C
10hour half-life decomposition temperature 63℃（DMF）
Activation energy 134.0 kJ/mol
Frequency factor (ln A) 37.70
Solubilities

water : practically insoluble.
ethanol, ether, formamide : freely soluble
methanol : soluble.
toluene : insoluble.
※hot water, alkali：soluble.

SADT 60℃

*SADT: Self-accelerating decomposition temperature

Packaging & Storage conditions

Packaging 10kg / 500g
Storage conditions keep under 20℃

Related laws and regulations

TSCA Listed
EINECS Listed
REACH 01-2120757352-55-0002
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Here, you can calculate the ‘residue rate’, ‘decomposition reaction time’, and ‘temperature during the decomposition reaction’ of azo polymerization initiators.

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