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  • CAS No.


  • Molecular Formula :


  • Purity :

    96% ; 99%

  • Appearance :

    Orange or red crystalline powder

  • Annual capacity :

    40T / Per Month

  • Storage :

    Store in cool & dry place,Keep away from strong light and heat;

  • Packing :

    25Kg lined plastic woven bag (or according to user requirements) (44 cm*77 cm)

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Application :

This product is an important dye intermediate. It is itself a dispersed brown GL (C.I.58050). Used in the production of disperse blue SR, disperse blue B, disperse dark blue RB, disperse blue H3R, disperse blue 5R, disperse blue FFR, disperse dye orange GL, transparent blue, reduced ash BG, reduced brown BR, etc.; Blue RAW, weak acid green GS, weak acid yellow G, weak acid blue RAW, acid green P-3B, acidic medium ash BS, acid indigo R and used to produce intermediate 1,4-diaminopurine dye intermediates. The 1,4-dihydroxyindole-2-sulfonic acid can be obtained by sulfonation of 1,4-dihydroxyindole.;

Description :

Other Names:
C.I.58050; 1,4-Dihydroxy-9,10-anthracenedione
Synthesis Technology:
The phthalic anhydride and hydroquinone are condensed in concentrated sulfuric acid in the presence of boric acid, and then diluted, washed, neutralized, oxidized, and pressure filtered to obtain a finished product. Raw material consumption quota: hydroquinone 550kg/t, phthalic anhydride 1280kg/t, boric acid 550kg/t, sulfuric acid 4300kg/t.;

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