Product: Scarlet Acid
Chemical name: 6,6'-Ureylene-bis(1-naphthol-3-sulfonic acid); Urea J Acid; Carbonyl J Acid;
CAS NO: 134-47-4
Molecular formula: C21H16N2O9S2
Structure formula:
Properties:
Grey-white powder. Soluble in water and alkali solution. It may blast when heated to more than 100°C. Toxic.
Application:
Used as azo dyestuffs. Mainly used for the preparation of direct Orange S and direct acid-proof bright-red 4BS.
Specification:
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Items
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Quality
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Coupling Value,%
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80 min.
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Insoluble matter,%
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0.2 max.
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Free J Acid,%
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0.0 max.
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Chloride,%
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5 max.
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