Name:C.I.Direct Brown 100,C.I.35800
Molecular Structure: Multi-azo class
Molecular Weight: 1045.92
CAS Registry Number:10127-06-7
Manufacturing Methods : 3-Amino-4-hydroxybenzenesulfonic acid diazo, and Resorcinol coupling, in 30 ℃ with water cut copper sulfate processing, get copper complex as coupling components; 7-Aminonaphthalene-1,3-disulfonic acid diazo, and m-Toluidine coupling, again diazo, and m-Toluidine coupling, and then and 4-Nitrobenzoyl chloride condensation, will the nitro reduction for both the amino nitrogen, and the generation of coupling components coupling.
Properties and Applications: yellow light brown. Soluble in water for orange brown, soluble in ethanol. The strong sulfuric acid in red for brown + purple, for yellow brown after diluted. The dye solution to join strong hydrochloric acid for olive brown, have precipitation; Add thick sodium hydroxide solution for orange brown, have precipitation.
|Standard||Acid Resistance||Alkali Resistance||Light Fastness||Soaping||Water|
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