Molecular Formula | C40H27CrN8O10S2.2Na |
Molar Mass | 941.807 |
Vapor Presure | 0Pa at 25℃ |
Physical and Chemical Properties | Red Violet powder. Soluble in water and ethanol. The aqueous solution was blue-red, and after adding hydrochloric acid, it turned orange-red, accompanied by red precipitation; After adding sodium hydroxide, it was red, and there was precipitation. In concentrated sulfuric acid in blue red, diluted red. |
Use | neutral jujube red D-BN is used for dyeing wool, silk, nylon, wool, silk, direct printing of viscose fabrics, but not discharge. Also used for leather coloring. |
production method | 1-amino-2-naphthol-4-sulfonic acid and 1-phenyl-3-methyl-5-pyrazolone are used as raw materials. The former is first diazotized, coupled with the latter, and then complexed with sodium chromium salicylate to give the product. Filtration, drying to obtain the finished product.. |