| CAS No.: | 68333-79-9 |
|---|---|
| Other Names: | APP |
| MF: | (NH4PO3)n |
| EINECS No.: | 269-789-9 |
| Place of Origin: | China (Mainland) |
| Grade Standard: | Industrial Grade |
| Purity: | 99.9% |
| Appearance: | white powder |
| Application: | Coating Auxiliary Agents,Plastic Auxiliary Agents,Rubber |
| Brand Name: | EG |
| Model Number: | |
| Inorganic Chemicals: | APP |
Quick Details
Specifications
Ammonium Polyphosphate
Product Description
Product Description
Ammonium Polyphosphate/ APP / (APP-I) / (APP-II)
CAS No.: 68333-79-9
EC No.: 269-789-9
Molecular Formula:
APP-I: (NH4)n+2PnO3n+1
APP-II: (NH4PO3)n n>1000
Properties:
As per the polymerization degree, APP has got three grades, i. E. High polymerization grade, medium polymerization grade and low polymerization grade, and as per the structure, it can be divided into crystalline product and amorphous product. The crystalline product has five varieties, namely from type I to type V. It is in white powder, not easily deliquescent, has got good compatibility with other auxiliaries, insoluble in water, odorless and poison-less. Its gravity is 2.3.
APP-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.
Uses: As a fire retardant it is mainly applied to anti-fire coatings, plastics, rubbers, plumber and paper etc.; It can also used as a fertilizer.
Packing: 25 Kg net WPP/PE bags.
CAS No.: 68333-79-9
EC No.: 269-789-9
Molecular Formula:
APP-I: (NH4)n+2PnO3n+1
APP-II: (NH4PO3)n n>1000
Properties:
As per the polymerization degree, APP has got three grades, i. E. High polymerization grade, medium polymerization grade and low polymerization grade, and as per the structure, it can be divided into crystalline product and amorphous product. The crystalline product has five varieties, namely from type I to type V. It is in white powder, not easily deliquescent, has got good compatibility with other auxiliaries, insoluble in water, odorless and poison-less. Its gravity is 2.3.
APP-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.
Uses: As a fire retardant it is mainly applied to anti-fire coatings, plastics, rubbers, plumber and paper etc.; It can also used as a fertilizer.
Packing: 25 Kg net WPP/PE bags.
|
Items |
APP-I |
APP-II |
|
Appearance |
White Powder |
|
|
P2O5 |
69.0% Min |
71.0% Min |
|
Total Nitrogen (N) |
14.0% Min |
14.0% Min |
|
Ph Value |
5.0 to 7.0 |
5.5 to 7.5 |
|
Water Solubility (25o C) |
— — |
0.5g/100ml |
|
Average Polymerization (n) |
50 |
1000 |
|
Size |
200 to 320 Mesh |
|