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        Mainly produces a series of intermediate products based on naphthalene and benzene

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        PRODUCTS

        Diazo 1,2,4 Acid
        Synonyms 1-Diazo-2-Naphthol-4-Sulphonic acid or 4-Diazo-3-hydroxy-naphthalene-1-sulphonic acid
        Stuctural formular
        CAS no 4857-47-0
        Molecular weight 250
        Molecular Formula

        C10H6N2O4S

        Specification
        Index
        Common specification
        Appearance
        Yellow to light brown moist material
        Purity %min.
        75
        Content by HPLC %min.
        95
        Insolubles %max.
        0.1
        Free acid (H2SO4) %max.
        2
        Fe mg/kg max.
        30
        Uses It is an important component in azo dyes for
        A)After chroming, Mordant black-3, Mordant black-17, Mordant red-7
        B)Pre-formed 1:1 metal complex dyes like Acid blue 155,Acid blue 158, Acid blue 158:1, Acid blue 161, Acid red 186, Acid red 201
        C)Pre-formed 2:1 metal complex dyes like Acid blue 193, Acid violet 90, Acid violet 92
        Packing In HDPE woven sacks with poly liner or in M.S. drums of 50kg to 170kg.

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        Add:Room 401-418, Building 18, Changjiang Plastics Chemical Market, 600 Tongjiang Middle Road, Xinbei District, Changzhou City
        E-mail:xinyan_gu@changyuchem.com

        International Trade:
        Tel: +86-519-85481997/81187592/85761005
        Fax: +86-519-85484533/85761018

        Domestic Trade:
        Tel: +86-519-85481743/85772200/85761002
        Fax: +86-519-85481030/85761058

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