Citric Acid (1)
Mineral Nutrients (6)
Phosphorus Derivatives (5)
Phosphoric acid food grade (4)
Polyphosphoric acid (PPA) (2)
Sodium Hexametaphosphate (SHMP) (1)
Sodium Tripolyphosphate (STPP) (2)
Trisodium phosphate(TSP) (1)
Phosphorous acid 98.5% 99% (1)
Sodium acid pyrophosphate(SAPP) (1)
Sodium Hypophosphite(SHPP) (1)
Dicalcium phosphate(DCP) (2)
Zinc Sulphate(ZnSo4) (1)
Monocalcium Phosphate(MCP) (1)
Manganese Sulfate (MnSo4) (1)
Hypophosph Acid(HPA) (1)
THPS 75% (1)
phosphorous acid 98.5% 99%
- Model NO.:phosphorous acid 98.5%min
- Quality:Tech Grade
- Packing:25kg/Bag, 1mt/Bag
- Classification:Phosphorous Acid
- Grade Standard:Industrial Grade
- Assay:98.5%, 99%
- Export Markets:Global
- Packing:25kg/Bag, 1mt/Bag.
- Standard:Assay: 98.5%, 99%
- HS Code:2811199090
- Production Capacity:15000mt/Year
Product Name: Phosphorous acid
CAS No.: 10294-56-1
UN No.: 2834
Chemical Formula: H3PO3
appearance: White crystalline
Place of Origin: China
Grade Standard: Industrial Grade
Purity: 99% min, 98.5% min
Package: 25kg poly bags. 1mt super sacs.
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.
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.
15,000 tons per year
|Analysis||Top Grade-99%min||First Grade -98.5%min|
|Appearance||White Crystalline||White Crystalline|
|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||0.01 Max|
|Phosphate (PO4) %||0.1 Max||0.2 Max|
|Heavy Metal %||0.001max||0.001max|
|Total organic content (70%soln)%||—–||0.05max|
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