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V-65, Azo Initiator

Wako 1st Grade
Specification Assay :
95.0+% (After Drying)(Titration)
Manufacturer :
FUJIFILM Wako Pure Chemical Corporation
Storage Condition :
Molecular Formula :
Molecular Weight :
  • Structural Formula
  • Label
  • Packing
Product Number
Package Size
50 G
List Price
80.00 USD

In stock


Spectral Data
Certificate of Analysis
Calibration Certificate



Plastics manufacturing

When compared with AIBN, the 10-hour half-life temperature of this oil-soluble azo polymerization initiator is 10 ℃ or lower than AIBN.
This product can be used for a wide range of applications, from versatile polymers to cosmetics-related use.

  • Oil-soluble azo initiator having a low decomposition temperature
  • Soluble in various organic solvents
  • Employed in various polymerizations for general purposes
  • 10 Hour half-life decomposition temperature; 51℃

Comparison of V-65 and V-65B

Kinetic parameters & half-life

Frequent factor LnA ∆Ea Half-life (min)
30°C 50°C 70°C
V-65 34.18 28.97 (kcal/mol) 13,408 680 49
V-65B 34.41 29.11 (kcal/mol) 13,434 672 48

Changes of half-life near 50°C

Temperature (°C) 49.7 49.8 49.9 50.0 50.1 50.2
V-65 710 700 690 680 671 662
V-65B 701 691 681 672 662 653


(w/w at 20℃)
Solvent V-65B V-65
Acetone 69.7 50.0
Benzene 63.2 66.0
Cyclohexane 17.6 -
Dichloroethane 56.9 -
Dioxane 58.7 56.0
DMF 60.8 50.0
DMSO 26.0 -
Ethanol 24.0 -
Ethylether 58.3 -
Isopropanol 20.3 -
Methanol 44.5 14.3
n-Hexane 10.0 4.0
THF 66.0 -
Toluene 150.0 72.0


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Overview / Applications

Outline When compared with AIBN, the 10-hour half-life temperature of this oil-soluble azo polymerization initiator is 10 ºC or lower than AIBN.
This product can be used for a wide range of applications, from versatile polymers to cosmetics-related use.


Appearance white, crystalline powder
Specificity 10-hour half life temperature: 51 ºC (Toluene)
Solubility water: insoluble.
benzene, acetone, ether, N,N-Dimethylformamide, toluene, methanol: soluble.
Melting Point 45-70 °C

Manufacturer Information


  • 2,2'-Azobis(2,4-dimethylvaleronitrile)

Author : [WKUS] Naomi Tsurutani

For research use or further manufacturing use only. Not for use in diagnostic procedures.

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