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ALUMINIUM HYPOPHOSPHITE
ALUMINIUM HYPOPHOSPHITE
I、PROPERTIES
a. Appearance: White crystal/powder.
b. Solubility: Insoluble in water, insoluble in alcohol, Its water solution appears weak acid.
C. Molecular formula: Al(H2PO2)3
d.Structural formula:
e. Molecular weight: 221.95 
f. CAS NO.: 7784-22-7
II、Quality standard
Item
Specification
Al(H2PO2)3Content
97-99% Min.
Particlesize(D50 μm)
50 Max.
The initial thermal decomposition temperature
≥280℃
Phosphide(%)
41.9±0.5 %
Aluminum salt(%)
12.2±0.5%
Moisture(%)
≤0.5%
PH (20 °C, 100 g/l)
3-5
Ⅲ. Usage
The product is suitable in Flame retardant modification of PBT、PET 、TPU、ABS。Using an appropriate amount of stabilizer agent、coupling agent mixed with P-N flame retardant as APP、MC or MCA in usage.8%-12% can be satisfactory for polyester or polyester type TPU, 25%-35% can be satisfactory for SEBS.
Ⅳ.Package
In 25kg kraft paper bag, inner lined with PVC bag, or as customer required.
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