| Molecular Formula | C22H18N2O4S |
| Molar Mass | 406.46 |
| Physical and Chemical Properties | Chemical nature blue-green powder. Slightly soluble in water. It is olive-colored when dissolved in sodium sulfide solution. It is dark blue in concentrated sulfuric acid, and dark blue precipitate is produced after dilution. It is orange in alkaline sodium hydrosulfite solution and returns to normal color light after oxidation. |
| Use | Uses Vulcanized brilliant green GB is mainly used for dyeing cotton, hemp, viscose fiber, vinylon and its fabrics and direct printing of cotton cloth, with good levelness. It is also used to dye dark green, crab blue and other colors with other sulfide dyes, and the color light is brighter. |
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
Using p-aminophenol and phenyl pericaric acid as raw materials, the two are first condensed in the presence of sodium hypochlorite, then reduced with sodium sulfide, and then co-heated and refluxed with sodium polysulfide aqueous solution to complete vulcanization, and precipitate by oxidation Dye, filter, dry, and crush to obtain the finished product.