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    Sodium Borate
        Publish time 2018-11-05 15:59    

         Product introduction
    Sodium Borate
    Aliases/chemical names: borax, sodium tetraborate, sodium borate
    Molecular formula:Na2B4O7
    Molecular weight:201.22
    Implement quality standard :GB/ t537-1997


         Product features
          Anhydrous borax properties for white crystalline or colorless vitreous crystal, alpha rhombic crystal melting temperature 742.5 ℃, the density of 2.28; Beta rhombic crystal melting point 664 ℃, the density of 2.75. Hygroscopicity is strong, soluble in water, glycerol, slowly dissolved in methanol, can form a concentration of 13-16% of the solution, the aqueous solution is weak alkaline, insoluble in alcohol. Anhydrous borax is borax heating to 350 ~ 400 ℃ when the anhydride. When placed in air, it can be hygroscopically changed into borax decahydrate or borax pentahydrate.

        Technical indicators

    Index name

    Index

    Classy article

    Grade a

    Na2B4O7 %

    98

    95

    Na2CO3  %

    0.1

    0.40

    Na2SO4   %

    0.1

    0.40

    NaCl     %

    0.001

    0.03



        Range of application
    1. As the carrier of lubricant in metal wire drawing, as the stabilizer and skeleton body in refractories.
    2. used for high quality glass, glaze, flux, non-ferrous metal and alloy cosolvent.
    3. used for cement and concrete retarder, water system PH buffer, paraffin emulsifier.
    4. Borax is the basic raw material to make boron compounds, almost all boron compounds can be made by borax.
    5. Other properties are similar to borax.


        Packing standard
    25kg/ bag woven bag packaging, inner plastic outer woven 600kg/ dozen support, coated film into the port 20 feet container dozen support can be loaded with 12 tons into the port 20 feet container not dozen support 18 tons of anhydrous borax perennial export, product quality is stable, high output, can meet domestic and foreign customers.


         Product notes
         Under normal storage conditions borax is a stable crystal and will not undergo chemical changes. However, if it is wetted, it will react with water to release a small amount of heat and produce borax decahydrate. Therefore, it needs to be properly kept and should not be exposed to humidity or high temperature, otherwise it will agglomerate. Therefore, it is necessary to ensure good packing.


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