Ammonium polyphosphate is used as a food additive, emulsifier, and as a fertilizer. ... Ammonium polyphosphates as used as flame retardants in polymers have long chains and a specific crystallinity . They start to decompose at 240 °C to form ammonia and phosphoric acid.
Zinc borate is primarily used as a flame retardant in plastics and cellulose fibers, paper, rubbers and textiles. It is also used in paints, adhesives, and pigments. As a flame retardant, it can replace antimony(III) oxide as a synergist in both halogen-based and halogen-free systems.