Phosphonic acid

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In plastics industry, it mainly used as reducing agent (whitening agent for nylon, temperature plastic, synthetic fiber ...); materials for producing weedicide, bactericide and water stabilizer in pesticide industry. Also used as raw material in the producing of plastic stabilizer, synthetic fiber, synthetic fibrin dibasic Glypho, and phosphate intermediate material of pesticides. Phosphorous acid for Agriculture and water treatment product like ATMP.Our company is a professional manufacture, with a complete Phosphorous industrial chain, from yellow phosphorus ore. Phosphorous AcidMolecular Formula H3PO3 Molecular Weight 82.00CAS No. 13598-36-2UN No. 2834    Specification  A GradeB GradeMain Content(based on H3PO3 ) (%)≥ 99.0≥ 98.5Iron Content(based on Fe) (%)≤ 0.001≤ 0.003Chloride Content(based on CL) (%)≤ 0.01≤ 0.02Sulfate Content(based on SO4) (%)≤ 0.008≤ 0.01Phosphate Content(based on PO4) (%)≤ 0.2≤ 0.6AppearancePure white crystalWhite crystal70% Aqueous Solution TestColorless transparentColorless transparent, without impuritiesLiquid Phosphorous Acid (%) ≥ 70-80Colorless, transparentPropertiesPhosphorous 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 °CBoiling Point 200 °C (Decomposes)Solubility Easily soluble in water and alcohol.ApplicationsPhosphorous acid is mainly used in the production of phosphates, synthetic fibers and organophosphorus pesticides, etc.. It is also used in producing high performance water treating agent ATMP.Packaging 25kg / 500kg / 1000kg in woven bag lined with double layer polythene bag.The packaging should be marked with "CORROSIVE"sign.Output 20,000 tons per year