| Physical and Chemical Properties | Chemical properties black powder. Soluble in water. Dissolved in sodium sulfide solution and dark olive color. It is grass green in alkaline hydrosulfite solution. |
| Use | Uses vulcanization reduction black CLG is mainly used for dyeing cotton, hemp, viscose fiber and cotton blended fabric, also used for cotton, viscose fiber fabric printing. Often combined with sulfurized reduced Blue RNX or other sulfur dyes, dark blue and dark brown, also used for light gray dyeing. Good dyeing rate, moderate levelness. |
| Raw Materials | 4-Aminophenol SODIUM TETRASULFIDE 2,4-Diaminotoluene Oxidized sulfurized aminophenols 4-Nitrophenol |
Using 2-naphthol and p-aminophenol as raw materials, the two are first condensed, then vulcanized with sodium polysulfide, and the finished product is obtained by oxidation, filtration, drying and crushing.