AC 4000
This is a yellow powder which is soluble in alkalis but insoluble in other solvents such as alcohol, benzene and water. It has a decomposition temperature that is over 200 Celsius and is non-toxic, stink-free however, it is flammable. Its applications are in the fields of rubber and plastics.
AC 7000
This is a light-yellow powder which is non-toxic and has self-extinguishing abilities. It has a decomposition temperature of greater than 200 Celsius. It is soluble in alkalis but insoluble in alcohol, water and benzene. Its mainly used in the plastics and rubber industries as a foaming agent.