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By certification 
I. Properties
a. Appearance: White crystal or powder.
b. Solubility: Insoluble in water, insoluble in alcohol; its aqueous solution is weakly acidic.
C. Molecular formula: Al(H₂PO₂)₃
d. Molecular weight: 221.95
e. CAS NO.: 7784-22-7
II. Quality standard
Item |
Specification |
Al(H₂PO₂)₃ % |
99% Min. |
Particle size (μm) |
10 Max. |
Initial thermal decomposition temperature |
≥320℃ |
Phosphate (%) |
41.9±0.5 % |
Aluminum salt (%) |
12.2±0.5% |
Moisture (%) |
≤0.5% |
Ⅲ. Usage
This product is suitable for flame retardant modification of PBT, PET, PA, TPU, ABS. Please pay attention to the appropriate amount of stabilizer, coupling agent and other phosphorus and nitrogen flame retardants APP, MC or MCA before use.
For polyester or polyester TPU, only 8-12% of this product can meet the flame retardant requirements, and for SEBS, 25-35% can meet the flame retardant requirements.
Ⅳ. Package
Net weight 25kg, composite woven kraft paper bag lined with polyvinyl chloride bag.
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