Phosphorous acid

Phosphorous acid
Basic Info.

Model NO.: phosphorous acid 98.5%min
Quality: Tech Grade
Packing: 25kg/Bag, 1mt/Bag
Appearance: Crystal
Classification: Phosphorous Acid
Grade Standard: Industrial Grade
Assay: 98.5%, 99%
Export Markets: Global

Additional Info.

Trademark: wisdom
Packing: 25kg/Bag, 1mt/Bag.
Standard: Assay: 98.5%, 99%
Origin: China
HS Code: 2811199090
Production Capacity: 15000mt/Year

Product Description

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

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