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  • Phosphorous Acid 98 5 Min 99 - China

    price: contact company for price

    Product Name: Phosphorous acid

    CAS No.: 13598-36-2

    UN No.: 2834

    Chemical Formula: H3PO3

    appearance: White crystalline

    Place of Origin: China

    Grade Standard: Industrial Grade

    Analysis Top Grade

    Appearance White Crystalline

    Assay (%) 99.0 Min

    Iron (Fe) PPM 10 Max

    Chloride (Cl) % 0.01 Max

    Sulphate (SO4 )% 0.005 Max

    Phosphate (PO4) % 0.1 Max

    Heavy Metal % 0.001max

    Total organic content (70%soln)% -

    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 ℃, 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 ℃)

    Melting Point: 73.6 ℃

    Boiling Point: 200 ℃ (Decomposes)

    Solubility: Easily soluble in water and alcohol.


    18, 000 tons per year

    Company Contact:

    • Phone: 008653283868635

    • Address: Room 1105, Section A of Ruinacondo, No. 69 Haimen , Qingdao , China

    • Email: Email

    Published date: August 28, 2013 -

    • Business Description: Qingdao wisdom international trading co. ltd. is located in the

      beautiful coastal city and the sailing capital of Qingdao, it is a set

      of import and export of chemicals, production, warehousing, sales

      agents group company. The company has abundant capital and technical

      strength and rich production and management experience, since its

      inception in 2005, has fixed assets of 15 million yuan, with annual

      sales of $ 10 million. Established norms marketing system and modern

      enterprise system.

      To provide customers with high quality products, while providing comprehensive after sales service, to do the most reliable supplier of chemicals for the purpose of mission is to pass the brand value of China's chemical enterprises, Qingdao wisdom trade co. Ltd. is moving to capital diversified, scientific management, international business and international competitiveness and influence.group co ltd.

      Enterprise mission: To pass the brand value of China's chemical enterprisesCorporate vision: To make the best of a comprehensive chemical ISPCore values: Integrity, responsibility, effort, innovation, persistenceEnterprises and employees Declaration: To provide the most reliable services and products, to abtain the most reasonable returns, to be most reputable company. and people.

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