Name:C.I.Leuco Sulphur Red 6,C.I.53720
CAS Registry Number:12262-37-2
Manufacturing Methods : 8-Amino-7-methylphenazin-2-ol and sodium polysulphide aqueous solution in return in 115 ~ 116 ℃ heating 30 hours, then dilution, through the air and add salt to the precipitation. This is Pyridine by 4-Methylbenzene-1,3-diamine and 4-Aminophenol or 4-Nitrosophenol generated Indophenol oxidation and become.
Properties and Applications: bordeaux. Puce powder. Part of the soluble in water. In the sodium sulfide solution solubility is good, for the red light brown to brown; In concentrated sulfuric acid for dark blue purple, dilution after brown precipitation. Mainly used for cotton, hemp, viscose and vinylon/cotton blended fabric dyeing, suitable for dye corduroy, also used in leather dyeing.
|Standard||Acid Resistance||Alkali Resistance||Light Fastness||Fulling||Persperation Fastness||Soaping|
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