Ammonium Polyphosphate APP
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Product Description
Diantimony Trioxide/APP
Chemical Name: Diantimony Trioxide; APP; CAS 68333-79-9
Cas No.: 68333-79-9
EINECS No.: 269-789-9
Classification: APP101/APP102
Chemical Formula: (NH4PO3) n
Molecular Weight: 149.086741
Density: 1.74 g/cm3
Molecular Structure:
Description
Ammonium polyphosphate (APP) is an organic salt of polyphosphoric acid and ammonia. As a chemical, it is non-toxic, environmentally friendly and halogen-free. It is most commonly used as a flame retardant, selection of the specific grade of ammonium polyphosphate can be determined by the solubility, Phosphorus content, chain length and polymerization degree. The chain length (n) of this polymeric compound can be linear or branched. Depending on the polymerization degree, there are two main families of ammonium polyphosphate: Crystal phase I APP (or APP I), and Crystal phase II APP (or APP II).
APP phase I has a short and linear chain (n < 100), it is more water sensitive (hydrolysis) and less thermally stable; actually it begins to decompose at temperatures above 150 °C.
The second family of Ammonium polyphosphate is the APP Phase II; which has an high polymerization degree, with n>1000, its structure is cross linked (branched), and it is an high-quality non-halogenated flame retardant. APP phase II, Ammonium polyphosphate, has an higher thermal stability (the decomposition starts at approximately 300°C) and lower water solubility than APP I.
Diantimony Trioxide Standard
Technical Parameter APP101 APP10
Appearance: White powder White powder
Phosphorus content (%) 28.0-30.0 31.0-32.0
Moisture content (%) ≤0.25 ≤0.25
Solubility (25 ℃, 4% water suspension) g/100ml ≤0.20 ≤0.50
Viscosity (25 ℃, 10% water suspension) mpa.s ≤20 ≤50
PH value (25 ℃, 5% water suspension) 7.0-9.0 5.5-7.5
Average particle size（ μ M) ≤20 ≤20
Thermal weight loss (1%) ℃ ≥280 ≥280
Application
1. Mainly used in expansion type fireproof coatings and thermosetting resins (such as polyurethane rigid foam, UF resin, epoxy resin, etc.), it can also be used for flame retardancy of fibers, wood, and rubber products. Especially in PP used for manufacturing electronic components, it can reach UL94V-0 flame retardant level.
2. APP102 has excellent weather resistance and high stability. When used in coatings, it can significantly improve the water resistance of the product. When used in thermosetting resins, it can reduce the proportion of the product, increase the amount of fiberglass, and improve the surface performance of the product.
3. APP101 has undergone surface treatment, with strong moisture resistance, alkaline pH value, and low water solubility.
Storge & Handling
Handle with care, seal and store, do not get damp. Store in tightly closed containers in a cool, well-ventilatedarea away from heat, strong oxidizers, acids. Store separately from food ingredients, BRF3 and chlorinated rubber.
Packing
25KG/PAPER BAG