Property: The pure form of this product is a colorless crystal with the density of (19°C)1.493 and the melting point of 26.5°C. It can be mixed with water in any proportions. Being a strong reducer, it can be mixed with water in any proportion, and it is easily oxidized in air. If the anhydrous acid is heated to 130-140°C, it will be decomposed into PH3 and H3PO4.
Uses:
1.As antioxidant and color-reducing agent for alkyd resin.
2.As reducer.
3.In the manufacture of sodium hypophosphite, calcium hypophosphite, manganese hypophosphite, iron hypophosphite etc.
Specification:
|
Item
|
Specification
|
|
Hypophosphorous acid (H3PO2) Content, % ≥
|
50.0
|
|
Phosphorous acid (H3PO3) Content, % ≤
|
0.3
|
|
Iron (Fe) Content, % ≤
|
0.0005
|
|
Chloride (Calculated as Cl)Content, % ≤
|
0.015
|
|
Sodium(Na)Content, % ≤
|
0.05
|
|
Sulfate(Calculated as SO4 )Content, % ≤
|
0.015
|
|
Arsenic (As)Content, % ≤
|
0.0001
|
|
Lead (Pb)Content, % ≤
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0.0005
|
|
Chroma(Hazen)
|
30
|
|
Relative Density(20°C)
|
1.210-1.226
|
|
