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1-aminoanthraquinone
1.Product quality indicator
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Items
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Indicator
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Excellent
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First-class
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Qualified
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Crude
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Appearance
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Red crystalline powder
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Red to brownish red crystalline powder
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1-amino-anthraquinone,%≥
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98.5
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97.5
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96.0
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80
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1-5-diamino-anthraquinone,%≤
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0.3
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0.5
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1.0
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1-8-diamino-anthraquinone,%≤
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0.1
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0.3
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0.5
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Above is the indicator of superior products, according to the needs of clients, first-class, second-class and crude products can be made respectively.
2.Physicochemical properties
Needle-like crystal of glittering red. Melting point is 253-256 °C,and can be sublimated. Soluble in hot nitrobenzene, toluene, xylene, ethyl ether, sulfuric acid, chloroform, benzene. Slightly soluble in cold alcohol, insoluble in water.
3.Use
Important intermediates of vat dyes, disperse dyes and reactive dyes.
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