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Fire Retardant Ammonium Polyphosphate Halogen Free - China

price: contact company for price

Cas No. : 68333- 79- 9

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.

Technical Data:

Products: Ammonium polyphosphate

Appearance: White powder

P2O5( w/ w) : ≥ 71%

N content( w/ w) : ≥ 14%

Decomposition Temperature( TGA, onset) : > 275℃

Solubility( g/ 100ml water, at 25℃ ) : < 0.5

PH value( 10% aqueous suspension) : 6.5- 8.5

Viscosity( 10% aqueous suspension, 25℃ ) : < 100

Moisture( w/ w) < 0.25%

Average particle size: 10um

Sample: Free sample


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.

Company Contact:

  • Phone: 862884721008

  • Address: 4-2-5# Youpingshangdong,66#Jiancai Road,Chengdu,Ch, Chengdu, China

  • Email: Email

Published date: October 10, 2014 -

  • Business Description: We manufacture flame retardant ammonium polyphosphate. It is widely used in fire retardant coating,paints,wood,paper and textile. We have 10 years experience in manufacturing ammonium polyphosphate. Our products are halogen free. Ammonium polyphosphate (APP II) and melamine coated ammonium polyphosphate sell much in foreign market.

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