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vat dyes vat orange

Country/Region china
Company Jinan JuHeng chemical CO., Ltd.
Categories Acid Red Dye
Telephone 86-0531-66711649
ICP License Issued by the Chinese Ministry
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    vat dyes vat orange

    vat orange

    CAS No




    Chemical Properties

    Orange-red powder. Insoluble in acetone, ethanol, chloroform, toluene,

    slightly soluble in pyridine, o-chlorophenol. In concentrated sulfuric acid

    was dark red light yellow liquid in alkaline hydrosulfite also in olive

    colored (with red fluorescence) in acidic solution was red brown.


    Brilliant Orange GR reduction for cotton dyeing and printing cotton, also

    suitable for dyeing polyvinyl alcohol, nylon and polyester, cotton fabric

    dimensions. Also used in the manufacture of organic pigments.

    Dark-colored printing for cotton

    Production methods

    To 1,4,5,8 - naphthalene carboxylic acid and o-phenylenediamine 4 as raw

    materials, condensation in acetic acid medium, after separation of the

    product obtained after purification. . Cis-isomer and trans isomer mixture shall restore the Red GG

    (CIVat Red 14), After separation, the cis-isomer shall restore the Claret

    2R (CIVat Red 15); trans-isomer shall restore the Orange GR

    (CIVat Orange 7). In the reactor by adding 1 naphthalene 4 acid, o-phenylenediamine were

    0.9 and 7.5 were acetic acid, heated to 115 ℃, 5h back after steaming to

    acetic acid. Then add hot water, boiled at 9030min, filter, filter cake

    with hot water to neutral. At below 100drying, reducing red GG.

    To the reduction of red GG obtained in ethanol solution of sodium

    hydroxide for two separate heating, by reducing, respectively, and restore

    the Claret Brilliant Orange GR 2R.


    25kgs/pp bag or at buyer's option


    50% T/T in advance and 50% paid by L/C

    Delivery time

    two weeks after we recieved the deposit(for 1fcl)

    Quality vat dyes vat orange for sale
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