Sulphur Brown 10 Usage And Synthesis

Preparation

1 parts of?4-Methylbenzene-1,3-diamine??and 2 parts of? mixture of sulfur of 210 ~ 250 ℃ calcination 15 hours, product dissolved in Sodium sulfide and Sodium hydroxide solution, then add salt, in six hours heated to 240 ℃, again in the 250 ℃ heating for more than 4 hours, make the moisture evaporation (BIOS 1155, – 39).

Properties and Applications

brown. Red brown powder. Insoluble in water, soluble in Sodium sulfide solution for brown, slightly soluble in concentrated sulfuric acid. Dyeing content in alkaline insurance powder solution slightly change; In Sodium hypochlorite solution shallow, yellowing, join concentrated sulfuric acid turn yellow. Mainly used for cotton, hemp, viscose and vinylon/cotton blended fabric dyeing, and sometimes also used in leather and paper dyeing.

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