Sulphur yellow 2
Sulphur yellow 2
CAS: 1326-66-5
Molecular Formula:
Sulphur yellow 2 - Names and Identifiers
| Name | Sulphur yellow 2 |
| Synonyms | Sulphur yellow 2 Light Yellow GC Sulphur Yellow GR. C.I. Sulphur Yellow 2 Sulfur Light Yellow GC Sulphur Light Yellow GC Dycosulphur Light Yellow GC Sulfur yellow 2 (C.I. 53120) Formamide, N,N'-(4-methyl-1,3-phenylene)bis-, reaction products with [1,1'-biphenyl]-4,4'-diamine and sulfur |
| CAS | 1326-66-5 |
| EINECS | 215-437-4 |
Sulphur yellow 2 - Physico-chemical Properties
| Physical and Chemical Properties | Yellow-brown powder. Insoluble in water, soluble in sodium sulfide solution is Brown yellow. Partially dissolved in concentrated sulfuric acid, resulting in a yellow precipitate after dilution. Slightly discolored in alkaline sodium hydrosulfite solution, totally discolored in sodium hypochlorite, and turned to dark orange in case of concentrated sulfuric acid. |
Sulphur yellow 2 - Reference Information
| Use | sulfurized yellow GC is mainly used for dyeing cotton, hemp, viscose fiber, vinylon, also used for leather coloring. It can be used for color matching, and can be used to color grass green, beige, turmeric, yellow brown, dark brown, dark green, dark gray and other colors. |
| production method | with 2, 4-diaminotoluene as the raw material, firstly, 2,4-diaminotoluene and formic acid are subjected to formylation reaction to form 2,4-diformylaminotoluene. The mixture of 2, 4-diformylaminotoluene and sulfur was then calcined at 140-150 °c and the temperature was gradually increased to 218-220 °c over a period of 15H. The product was cured and cured. The product was obtained by cooling and crushing.. |
Last Update：2024-04-09 15:16:45
