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    Borax
        Publish time 2018-11-07 10:23    


        Product introduction
    Borax
    Molecular formula: Na2B4O7.10H2O
    Molecular weight: 381.37
    CAS no. : 1303-96-4
    Customs code: 28401900
    Translucent colorless crystal or crystalline white powder; No smell, salty taste; Heated to 350-400 ℃ lost all crystallization water is anhydrous borax. (Na2B4O7), density 1.72g/cm3; Soluble in water, glycerin, but insoluble in alcohol. The aqueous solution is slightly alkaline and colorless glassy when melted. Have bactericidal action, take orally harmful to human body. Chemically, it is sodium tetraborate with 10 water molecules. Its crystal is plate-like or columnar, crystal is collected together form crystalline cluster shape, grainy, porous earth block to wait a moment, color is white belt ash or belt light color attune yellow, blue, green, have vitreous burnish.
    Borax is a soft and light colorless translucent crystal or white crystalline powder. Chemically, it is sodium tetraborate with 10 water molecules. Borax is odorless and salty. Soluble in water, glycerin, slightly soluble in alcohol, the aqueous solution is slightly alkaline. Borax weathering slowly in the air, melting into a colorless glassy material.



         Technical specifications of borax

    index name

    Execution standard

    Grade a

    seconds

    Na2 B4O7·10H2O%

    ≥99.5

    ≥95.0

    Na2 CO3  %  ≤

    0.10

    0.20

    Water insolubles %  ≤

    0.04

    0.04

    Na2 SO4 % ≤

    0.20

    0.20

    Na Cl   % ≤

    0.03

    0.05

     Fe    % ≤

    0.002

    0.005



         Range of application
    · borax has many USES, such as the familiar use of borax as disinfectant, preservative, soft water agent, eye washing water, fillers for laundry powder and soap, ceramic glaze and glass raw materials.· in metallurgical industry, borax is used for calcining, welding and metal test, and it is also a good flux; Borax is used to purify metal surfaces when welding metals.
    · it is also the raw material for optical glass, enamel and enamel. In glass, the transmission rate of ultraviolet ray can be enhanced, and the transparency and heat resistance of glass can be improved. In enamel products, it can make the enamel not easy to fall off and make it shiny; It is also widely used in special optical glass, glass fiber, jewelry adhesives, printing and dyeing, washing (silk and wool, etc.), gold refining, cosmetics, pesticides, fertilizers, borax soap, preservatives, antifreeze and disinfectant for medical use.
    · borax is the basic raw material for the production of boron-containing compounds. Almost all boron compounds can be made by borax. They have important and extensive USES in metallurgy, iron and steel, machinery, military industry, cutting tools, papermaking, electronic tubes, chemical and textile sectors. Boron compounds borane can also act as high-energy rocket fuel.





         Precautions for storage and transportation
    1. This product is non-toxic, harmless, non-flammable and non-explosive, and can be stored and transported according to general chemical products.
    2, put in a cool, dry place, rain, moisture, avoid eating.







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