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    Home > Chemicals Industry > Chemical Technology > Production process and product use of sodium 2,4-diaminobenzene sulfonate

    Production process and product use of sodium 2,4-diaminobenzene sulfonate

    • Last Update: 2021-08-28
    • Source: Internet
    • Author: User
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    7.
    Production process

    1) Sulfonation

    Add 1100L of water to the sulfonation kettle, heat it to 50°C, add 119kg of light magnesium oxide under rapid stirring, and stir for a while
    .


    Then add 750kg of molten 2,4-dinitrochlorobenzene , continue heating to 65°C, and add 462kg of sodium bisulfite solution (prepared as a 4.


    2) Restore

    Add 1700L of water to the reduction pot, heat it to boiling, add 300kg of pig iron filings and 35kg of hydrochloric acid, and boil for 15 minutes
    .


    Under direct steam heating and boiling, slowly add 1/3 sulfonate within 1.


    8.
    Product Standards

    9.
    Quality inspection

    Assay:

    Accurately weigh 10g of sample (accurately to 0.
    2mg), place it in a 500mL volumetric flask, add 150mL water, 30mL hydrochloric acid, and dilute to 500mL
    .


    Use a pipette to draw 50 mL into a 400 mL beaker, add 100 mL water, 10 mL hydrochloric acid and 10 mL 10% KBr solution, and titrate with 0.


    In the formula: c—— The molar concentration of NaNO 2 standard solution, mol/L;

    V 1 , V 2 ——respectively the volume of NaNO 2 consumed in the sample and blank experiment , mL;

    G——The mass of the sample, g
    .

    10.
    Product use

    Dye intermediates
    .


    It is used to produce Reactive Brilliant Yellow X-6G, Reactive Brilliant Yellow X-HG, Reactive Brilliant Blue K-6G, Reactive Yellow KD-3G, Reactive Yellow M-5G, Reactive Brilliant Blue K-BR, Reactive Brilliant Blue K-GR, Reactive Brilliant Blue blue M-BR, weak acid red FC, Mordant brown RH and the like


    11.
    Safety measures

    (1) This product is toxic, and the raw material 2,4-dinitrochlorobenzene is also toxic
    .


    The production process equipment must be sealed to prevent leakage, and the operator should wear labor protection equipment


    (2) Packed in iron drums, with obvious "drug" signs, stored in a cool, ventilated, dry place, away from fire and heat sources, and stored separately from oxidants, acids, and flammable products
    .


    Store and transport in accordance with toxic chemicals regulations


     

     

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