Properties: Phosphorous acid is a colorless crystal. It can be slowly oxidized to phosphoric acid in the air. When heated to 180 °C, it can be decomposed into phosphoric acid and phosphine (highly toxic). As a dibasic acid, it has slightly ber acidity than phosphoric acid. Phosphorous acid has b reducibility and can easily reduce Ag+ to metal silver. It can also reduce sulfuric acid to sulfur dioxide. It is corrosive and has b hygroscopicity.
Relative Density: 1.651 (21.1 °C)
Melting Point: 73.6 °C
Boiling Point: 200 °C (Decomposes)
Solubility: Easily soluble in water and alcohol.
Molecular formula: H3PO3
Use: Phosphorous acid is mainly used in the manufacture for phosphates, synthetic fibers and organophosphorus pesticides, etc. It is also used in producing high performance water treating agent ATMP. It’s used as reducing agent in chemical reaction.
Specification:
Analysis |
Top Grade |
First Grade I |
Assay (%) |
99.0 Min |
98.5 Min |
Iron (Fe) PPM |
10 Max |
30 Max |
Chloride (Cl) % |
0.01 Max |
0.01Max |
Sulphate (SO4 )% |
0.005 Max |
0.008 Max |
Phosphate (PO4) % |
0.1 Max |
0.2 Max |
Appearance |
White Crystalline |
White Crystalline |
70% Aqueous Solution Test |
Colorless transparent |
-- |
Arsenic(As) % |
0.0008max |
-- |
Mercury (Hg)% |
0.0001max |
|
Lead (Pb)% |
0.002max |
|
Cadmium (Cd)% |
0.0012max |
|
Chromium (Cr)% |
0.002max |
|
Nickel(Ni)% |
0.003max |
|
Packing: 25kg poly bags. 1mt super sacs.
Contact Us
Qingdao Wisdom International Trading Co. Ltd.
Room 1806, Block B, China Resources Building,
No.6 Shandong Road, Qingdao, China
Tel: 0086-0532-83866629
Cell: 0086-16678608388
E-mail: export@wisdom-chem.com
lucyhuo@wisdom-chem.com
PRODUCTS
- Phosphorous Acid
- Polyphosphoric Acid
- Phosphorous Pentoxide
- Silica Gel White
- Silica Gel Blue
- Aluminium Sulphate
- Magnesium Carbonate Light
- Aluminium Hydroxide
- Zinc Stearate Light
- Calcium Stearate Light
- Iron Oxide Red 110
- Iron Oxide Red 130
- Iron Oxide Yellow 313
- Compound Ferric Green 5605
- Iron Oxide Black 330
- Polyaluminium chloride
- Zirconium Carbonate
- ATMP
- Zirconium dioxide
- Ammonium Aluminum Sulfate