Fire Retardant Ammonium Polyphosphate

We are offering fire retardant ammonium polyphosphate. Molecular formula: (nh4po3) n n>1000
cas no.: 68333-79-9
einecs no.: 269-789-9
hs code: 28353990
model no.: tf-fr201
ammonium polyphosphate (phase ii) is a non-halogen flame retardant. It acts as flame retardant by intumescence mechanism. When app-ii is exposed to fire or heat, it decomposes to polymeric phosphate acid and ammonia. The polyphosphoric acid reacts with hydroxyl groups to form a nonstable phosphateester. Following dehydration of the phosphateester, a carbon foam is built up on the surface and acts as an insulation layer.
Applications:
1. Used to prepare many kinds of high-efficiency intumescent coating, the flameproof treatment for multistory building, ships, trains, cables, etc.
2. Used as the main flameproof additive for expanding-type flame retardant used in plastic, resin, rubber, etc.
3. Make into powder extinguishing agent to be used in large-area outfire for forest, oil field and coal field, etc.
4. In plastics (pp, pvc, pe, etc.), polyester, rubber, and expandable fireproof coatings.