| Specification: |
Trade Name: Phosphorous Acid
Mol. Formula: H3PO3
M.W.: 82.00
Properties:
Pure product is white crystals, specific gravity 1.651(21.2°C). M.P. 73.6°C, B.P. 200°C. Soluble in water and ethanol easily, and it will be oxidized into H3PO4 in the air slowly. Be decomposed into H3PO4 and phosphine when be heated to the temperature 180°C.H3PO3 is a kind of diacid, its acid-stage is higher than H3PO4. Be oxidized easily and has strong hygroscopy and corrosivity.
Usage:
It is the main stuff be used to manufacture the herbicide---glyphosate and also be used to manufacture phosphite etc.
Specifications:
|
Item
|
Premium grade
|
Grade I
|
Grade II
|
Grade III
|
Solution
|
|
Assay ％， ≥
|
99％
|
99％
|
99％
|
98.5％
|
70％
|
|
Chloride (Cl-) ％，≤
|
0.001
|
0.001
|
0.002
|
0.02
|
0.001
|
|
Iron (Fe) ％， ≤
|
0.0005
|
0.001
|
0.002
|
0.005
|
0.0005
|
|
Sulphate (SO4) ％， ≤
|
0.001
|
0.008
|
0.008
|
0.008
|
0.001
|
|
Phosphate (PO4) ％， ≤
|
0.1
|
0.2
|
0.2
|
0.2
|
0.1
|
|
Smell
|
odorless
|
odorless
|
odorless
|
odorless
|
odorless
|
|
Appearance
|
Pure white crystal
|
white crystal
|
white crystal
|
white crystal
|
Clear colorless
liquid
|
Remark:
Package:25kg, 500kg or 1000kg/bag (Inside:PE,Outside:PP) for phosphorous acid crystal
280kg/HDPE drum,1400kg/IBC or ISO-tank for phosphorous acid solution
|