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Flux / Fire Retardant Sodium Tetraborate , ISO9001 Approval Tetraborate Decahydrate

Flux / Fire Retardant Sodium Tetraborate , ISO9001 Approval Tetraborate Decahydrate

    • Flux / Fire Retardant Sodium Tetraborate , ISO9001 Approval Tetraborate Decahydrate
    • Flux / Fire Retardant Sodium Tetraborate , ISO9001 Approval Tetraborate Decahydrate
  • Flux / Fire Retardant Sodium Tetraborate , ISO9001 Approval Tetraborate Decahydrate

    Product Details:

    Place of Origin: CHINA
    Brand Name: YIXIN
    Certification: ISO9001
    Model Number: YXB-001

    Payment & Shipping Terms:

    Minimum Order Quantity: Negotiable
    Price: USD500-800/TON
    Packaging Details: 50kg/pp bag 20FCL:25MT
    Delivery Time: 3-12 working days
    Payment Terms: T/T, Western Union, L/C, D/P
    Supply Ability: 3000 ton per month
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    Detailed Product Description
    Description: Borax Decahydrate EINECS: 215-540-4
    HS CODE: 2840190000 Brand: Yixin
    Boiling Point: 1575 °C Melting Point: 741°C
    High Light:

    sodium tetraborate decahydrate


    sodium borate decahydrate

    95% Borax decahydrate powder use for flux and fire retardant with

    ISO9001 CAS NO 1303964

     ►Origin of Borax Decahydrate   



     • Sodium tetraborate was first discovered in dry lake beds in Tibet and was


    imported via the Silk Road to the Arabian Peninsula in the 8th Century




    •Borax first came intocommon use in the late 19th century whenFrancis


    Marion Smith's Pacific Coast Borax Company began to market and popularize a


    large variety of applications.Borax is a component of many detergents,


    cosmetics, and enamel glazes.


    • It is used to make buffer solutions in biochemistry, as a fire retardant, as an


    anti-fungal compound, in the manufacture of fiberglass, as a flux in


    metallurgy,neutron-capture shields for radioactive sources, a texturing agent in


    cooking, as a precursor for other boron compounds, and along with its inverse,


    boric acid, is useful as an insecticide.In artisanal gold mining, the borax method


    is sometimes used as a substitutefor toxic mercury in the gold extraction




    •Borax was reportedly used by gold miners in parts of the Philippines in the




     ►Product description



          1. Borax Decahydrate is the refined form of natural sodium borate. Composed of


    boric oxide (B2O3), sodium oxide, and water, it is a mild, alkaline salt, white and


    crystalline, with excellent buffering and fluxing properties.


    2. Available in powder or granular form.Borax Decahydrate is an important


    multifunctional source of B2O3, particularly for processes in which the


    simultaneous presence of sodium is beneficial.Borax decahydrate , also known


    as sodium borate, is an important boron compound, a mineral, and a salt of boric


    acid.Powdered borax is white, consisting of soft colorless crystals that dissolve


    easily in water.





    Poruct name

    borax decahydrate

    Molecular formula   Na2B4O7.10H2O
    Molecular wight  381.37
    Properties  White power or crystal granular 
    Purity   95% min 
    UN number   1458








     Specification for borax decahydrate  powder 95%

                Na2B4O7.10H2O  95.00%
     B2O3    ≥36.47%
    Na2O     ≥16.47%
    Na2CO3 ≤0.2%
    NaCL ≤0.5%
    Fe     ≤0.005%
    Water insoluble    ≤0.04%






      1. Borax Decahydrate is chemically stable under normal storage conditions.


      2. It will slowly lose water of crystallisation if exposed to a warm, dry atmosphere.


    Conversely, exposure to a humid atmosphere can cause recrystallisation at particle


    contact points, resulting in caking.


      3. When storing the product, care should therefore be taken to avoid wide


    fluctuations in temperature and humidity, and to ensure that the packaging is not




      4. Dissolved in water, Borax Decahydrate hydrolyzes to give a mildly alkaline




     5. It is thus capable of neutralizing acids. It also combines with strong alkalis to


    form compounds of lower pH.


      6. The relatively constant pH of Borax Decahydrate solutions


    makes it an excellent buffering agent





    A mixture of borax and ammonium chloride is used as a flux when welding iron and


    steel. It lowers the melting point of the unwanted iron oxide (scale), allowing it to


    run off. Borax is also used mixed with water as a flux when soldering jewelry metals


    such as gold or silver. It allows the molten solder to flow evenly over the joint in


    question. Borax is also a good flux for "pre-tinning" tungsten with zinc – making the


    tungsten soft-solderable.Borax is often used as a flux for forge welding.



    · Fire retardant



    Flux / Fire Retardant Sodium Tetraborate , ISO9001 Approval Tetraborate Decahydrate 0


    · Anti-fungal compound for cellulose insulation


    · Moth proofing 10% solution for wool


    · Pulverized for the prevention of stubborn pests (e.g. German cockroaches) in


    closets, pipe and cable inlets, wall panelling gaps, and inaccessible locations


    where ordinary pesticides are undesirable




    Packing details 


    Packing :25/50KG plastic pp bag

                  1 ton /jumbo bag ,or customized.

    Contact Details
    Shanghai Yixin Chemical Co., Ltd.

    Contact Person: anny

    Send your inquiry directly to us
    Shanghai Yixin Chemical Co., Ltd.
    No .818 Tianzhu Rd ,Jiading District ,Shanghai ,China
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