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Product Name |
Phosphonic acid |
Molecular Formula |
H3PO3 |
Structural Formula |
 |
Molecular Weight |
81.99 |
CAS No. |
13598-36-2 |
Density |
1.65 |
M.P. |
73°C |
B.P. |
200°C |
Properties |
colorless crystal, density 1.65g/m3, has strong moisture absorption, easily soluble in water; corrosive. |
Use |
widely used in the manufacture of phosphites; as raw material in the production of stabilizer for plastics; s reducing agent in chemical reaction; also used in synthetic fibre and pesticide industries. |
Export Packing |
Film-coated plastic woven bag or kraft paper composite bag lined with double-layer plastic bag, net wt. 25kg. |
Specifications (Standard HG/T2520-93 )
Item |
Grade |
Extra Best quality |
Best Quality |
First Quality |
Assay(H3PO3) |
99 |
98.5 |
98 |
Fe |
0.001 |
0.0015 |
0.0020 |
Chlorides(Cl) |
0.008 |
0.01 |
0.01 |
Sulphates(SO4) |
0.001 |
0.002 |
0.002 |
Phosphate(PO4) |
0.1 |
0.2 |
0.2 |
Appearance |
white crystal |
white crystal |
white crystal |
Aqueous Solution Test |
clear and colorless |
clear and colorless |
clear and colorless |
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