Product Description:
Product Name : Phosphorous Acid
Molecular formula: H3PO3
UN Number: 2834
EINECS No.: 237-066-7
CAS Number: 13598-36-2
Hazard Class: 8
Product Characteristics:
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 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.
Product Technical Data:
| Item | Index |
| PHOSPHOROUS ACID(H3PO3)% ≥ | 98.5 |
| CHLORIDE(as CL)% ≤ | 0.01 |
| PHOSPHATE(as PO4)% ≤ | 0.2 |
| SULPHATE(as SO4)% ≤ | 0.008 |
| IRON(Fe)% ≤ | 0.001 |
| Heavy metal(as Pb)% ≤ | 0.001 |
| Water-solubility | Excellent |
Product Application:
Widely used as the raw materials to make phosphorous acid salt,used as the raw materials for making of plastic
stabilizator in the plastic industry,used as reducer in chemical reaction,also used in the olefin industry, and used synthetic fibre, agricultural chemical industry and so on.