... fire or heat, it decomposes to polymeric phosphate acid and ammonia. The polyphosphoric acid reacts with hydroxyl groups to ... , a carbon foam is built up on the surface and acts as an insulation layer.Specification : Specification ValueAppearance White ... 97Use : In plastics(PP, PVC, PE, etc. ), Polyester, Rubber, and Expandable fireproof coatings. Packing : 25kg woven bag with plastic liner.