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Ammonium polyphosphate CAS 68333-79-9 Featured Image
  • Ammonium polyphosphate CAS 68333-79-9 1

Ammonium polyphosphate CAS 68333-79-9

Chemical Property:

Molecular Formula H12N3O4P
Molar Mass 149.086741
Density 1.74[at 20℃]
Vapor Presure 0.076Pa at 20℃
Appearance White powder
Storage Condition −20°C
Physical and Chemical Properties Ammonium polyphosphate can be divided into three types based on its degree of polymerization: low polymer, medium polymer, and high polymer. The higher the degree of polymerization, the smaller the water solubility. According to its structure, it can be divided into crystalline and amorphous types. Crystalline ammonium polyphosphate is water insoluble and long-chain polyphosphate. There are five variants from I to V type.
Use Inorganic additive flame retardant, used in the manufacture of flame retardant coatings, flame retardant plastics and flame retardant rubber products, etc.
It is mainly used in intumescent fire retardant coatings and thermosetting resins (such as polyurethane rigid foam, UP resin, epoxy resin, etc.), and can also be used for flame retardant of fiber, wood and rubber products. Since the APP has a high molecular weight (n>1000) and high stability, it can also be used as a main active ingredient of intumescent flame retardant thermoplastics, especially in PP up to UL 94-Vo for the manufacture of electronic parts.

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Introduction

Ammonium polyphosphate (PAAP for short) is an inorganic polymer with flame retardant and fire-resistant properties. Its molecular structure consists of polymers of phosphate and ammonium ions.

 

Ammonium polyphosphate is widely used in flame retardants, refractory materials and fire-retardant coatings. It can effectively improve the flame retardant performance of the material, delay the combustion process, inhibit the spread of flames, and reduce the release of harmful gases and smoke.

 

The method of preparing ammonium polyphosphate usually involves the reaction of phosphoric acid and ammonium salts. During the reaction, chemical bonds between phosphate and ammonium ions are formed, forming polymers with multiple phosphate and ammonium ion units.

 

Safety Information: Ammonium polyphosphate is relatively safe under normal use and storage conditions. Avoid inhaling ammonium polyphosphate dust as it can cause respiratory problems. When handling ammonium polyphosphate, strictly follow the relevant safety operating procedures and properly store and dispose of the compound.

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