VA-044

VA-044 is a non-nitrile azo initiator having a low decomposition temperature. It is soluble in... more

Product information

VA-044 is a non-nitrile azo initiator having a low decomposition temperature. It is soluble in water or methanol and has a 10 hour half-life decomposition temperature of 44° C./p>

Chemical Name

2,2'-[Azobis(1-methylethyliden)]bis[4,5-dihydro-1H-imidazoldihydrochloride

CAS No.: 27776-21-2

Molecular weight: 286.8 g/mol

Physical characteristics

Appearance	Pale yellow crystals or crystalline powder
Melting/freezing point	188-193° C
10 hour half-time decomposition temperature	44° C in water
Activation energy	108.2 KJ/mol K
Frequency factor (ln A)	30.19
Solubility	Freely soluble in water Slightly soluble in methanol and ethanol Insoluble in acetone and toluene
Self-accelerating decomposition temperature (SADT)	140° C

Main Applications

Acrylic emulsion, adhesives and emulsion polymerization
Finishing agents for textile and wool
Flocculants, dispersions and resists
Super absorbent polymers
Water and oil repellents

Regulations

EINECS No.: 248-655-3
REACH: 01-2120764032-64-0000

Storage

Store under 40°C. Keep away from sources of ignition. Protect against heat and humidity. Keep only in original container.

Safety Information

Health Hazard

Flammable

Literature

For more information and the latest publications please visit the Mediacenter.

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Übersicht Halbwertszeiten von wasserlöslicher Azo-Initiatoren