Molecule Structural Formula:
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Characteristics:
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CAS.
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134-47-4
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Appearance
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off-white powder (dry)
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Assay
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≥80%
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Free acid
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≤0.2%(HPLC)
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Insolubles
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≤0.2%
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Chlorinity
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≤5%
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Others:
Chemical formula: C21H16O9N2S2
Molecular weight: 504.50
Uses: intermediate of Azo dyes, mainly used in the preparation of direct orange S, direct acid scarlet 4 BS, etc.