... and ammonium salt solution, hardly soluble in wa Active Magnesium hydroxide is widely used in PE, PP, PVC, ABS, PS, HIPS ... , unsaturated polyester, epoxy resins, rubber, paint, flame retardant fillers, chemical, industrial fields such as environmental protection; for plastic, rubber and other ... well as the manufacture of other magnesium products. Origin Magnesium Hydroxide 98.5% high purity