{"id":615,"date":"2026-05-29T09:13:49","date_gmt":"2026-05-29T01:13:49","guid":{"rendered":"http:\/\/139.199.182.234\/?post_type=product&p=615"},"modified":"2026-07-22T09:34:21","modified_gmt":"2026-07-22T01:34:21","slug":"%e8%81%9a%e7%a3%b7%e9%85%b8%e9%93%b5app","status":"publish","type":"product","link":"https:\/\/dghtj.com\/en\/products\/%e8%81%9a%e7%a3%b7%e9%85%b8%e9%93%b5app\/","title":{"rendered":"Ammonium polyphosphate APP"},"content":{"rendered":"

CAS No.: 68333-79-9<\/strong><\/p>\n

Properties:<\/strong><\/p>\n

Ammonium polyphosphate, also known as polyphosphoric ammonium or condensed ammonium polyphosphate (abbreviated as APP), is a high-quality, efficient, non-toxic, odorless, non-corrosive gas-producing, low hygroscopicity, high thermal stability, excellent performance non-halogen flame retardant. It is an essential fire-retardant additive for various intumescent fireproof coatings and flame-retardant products. Our factory adopts advanced international multi-layer microencapsulation technology, with high phosphorus content, high nitrogen content, good thermal stability, low water solubility, nearly neutral, and high flame retardant efficiency. The product is a white powdered solid, non-hygroscopic, non-flammable, crystalline type II, with high molecular weight (n>1000) and high stability, so it can also be used as the main active ingredient for intumescent flame-retardant thermoplastics. Our product has been surface-treated, with stronger moisture resistance, alkaline pH, and lower water solubility (less than 0.1g\/100cm3 water at 25\u00b0C).<\/p>\n

Its flame retardant principle:<\/strong><\/p>\n

APP under high temperature conditions is heated and dehydrated to generate polyphosphoric acid or metaphosphoric acid, which can act as a strong dehydrating agent to undergo dehydration with the char-forming substances in the flame retardant system to form a carbon layer. Through the action of non-flammable gases produced by the gas source, an intumescent carbon layer is formed to isolate air and block the fire source, achieving flame retardancy.<\/p>\n

Features:<\/strong><\/p>\n

1. High degree of polymerization, high phosphorus and nitrogen content, good flame retardant effect.<\/p>\n

2. High degree of polymerization, low water solubility, low hygroscopicity.<\/p>\n

3. pH value close to neutral, good thermal stability, good compatibility.<\/p>\n

4. Increases powder flowability.<\/p>\n

5. Improves intumescence during combustion.<\/p>\n

Applications:<\/strong><\/p>\n

1. Used for formulating various high-efficiency intumescent fireproof coatings, can be used for fire protection of high-rise buildings, ships, trains, and cables;<\/p>\n

2. Used for flame retardant treatment of wood, plywood, fiberboard, paper, and fibers;<\/p>\n

3. Used as the main flame retardant additive for intumescent flame retardants (IFR) in plastics, resins, and rubber;<\/p>\n

Technical Specifications:<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
Phosphorus %<\/td>\n31.0-32.0<\/td>\n<\/tr>\n
Nitrogen %<\/td>\n14.0-15.0<\/td>\n<\/tr>\n
Volatile matter %<\/td>\n\u22640.3<\/td>\n<\/tr>\n
Thermal decomposition temperature \u2103<\/td>\n\u2265270<\/td>\n<\/tr>\n
pH value (10% suspension)<\/td>\n5.5-7.0<\/td>\n<\/tr>\n
Water solubility g\/100ml water<\/td>\n<0.3<\/td>\n<\/tr>\n
Particle size \u03bcm D50<\/td>\n\u226420.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Packaging:<\/strong>25Kg woven bag.<\/p>\n

Transportation:<\/strong>This product is non-hazardous, prevent moisture, rain and package damage during transportation.<\/p>\n

Storage:<\/strong>Store in a dry and ventilated warehouse.<\/p>","protected":false},"excerpt":{"rendered":"

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