产品名称

聚磷酸铵

CAS NO

68333-79-9

中文别名

多聚磷酸铵;阻燃剂R-A粉;APP

英文名称

Ammonium polyphosphate

英文别名

Polyphosphoric acids ammonium salts

分子式

(NH₄PO₃)n

分子量

149.08700

EINECS

269-789-9

熔点

沸点

毒性

APP-Ammonium polyphosphate Identification: Chemical Name: Ammonium polyphosphate CAS No.: 68333-79-9 Molecular formula : (NH4PO3)n (n＞1000,50, n＜20) Ammonium polyphosphate is a non-halogen and non-toxic flame retardant for plastics and rubber,coatings,paper and timber,painting,wood materials. It acts as flame retardant by intumescence mechanism. When APP 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. Technical Index: Appearance: White flowable powder P2O5 (w/w): ≥70% N Content (w/w): ≥14% Decomposition Temperature (TGA, onset): ＞275℃ Viscosity (10% aqueous suspension, at 25℃): ＜100mpa.s Solubility (g/100ml water , at 25oC): ＜0.5 pH value ( 10% aqueous suspension ): 6.5-7.5 Moisture (w/w): ＜0.25% Degree of Polymerization: >1000 Average Partical size (D50): 10μm Packing & Storage Packing in 25kg plastic woven bag with PE liner or other packing as request. Stored in dry and cool place, keeping out of moisture and sunshine, shelf life is two year.