is as an initiator of free radical reactions for the
production of polymer (polyvinyl chloride, polyacrylonitrile, polyvinyl alcohol and synthetic
fibers) and as a blowing agent for plastics and elastomers.
It is soluble in water.
(Packing Group: II)
half live at 69
C: 10 hrs (water)
OF BLOWING AGENT
Blowing agents, also called Foaming agents, can
be classified as Physical and Chemical Blowing Agents. Physical
blowing agents are not under chemical changes during processing.
Physical blowing agents are in forms of liquid or compressed
gas which will transfer state into gases or low boiling
liquid during processing causing resins into cellular structure.
Chemical Blowing Agents are mainly solid form of hydrazine
derivatives include Azodicarbonamide;
p,p'-Oxybis(benzenesulfonyl hydrazide); 5-Phenyltetrazole;
p-Toluene sulfonyl semicarbazide;
Trihydrazine Triazine; They commonly release gases such
as nitrogen, carbon dioxide, carbon monoxide or ammonia.
But ammonia is not desirable as it effects on degrade of
resins. There are nonazo blowing agents releasing carbon
dioxide such as sodium borohydride.