Reactive Yellow X-RG
Reactive Yellow 4
CAS: 12226-45-8
Molecular Formula: C20H15Cl2N6NaO6S2
Reactive Yellow X-RG - Names and Identifiers
Reactive Yellow X-RG - Physico-chemical Properties
| Molecular Formula | C20H15Cl2N6NaO6S2 |
| Molar Mass | 593.39 |
| Physical and Chemical Properties | Dark yellow powder. The solubility in water (50 °c) was 40g/L. The aqueous solution was yellow, and 1mol/L sodium hydroxide was added to turn orange, followed by addition of sodium hydrosulfite and warm to colorless, followed by addition of sodium perborate to restore the original color. In concentrated sulfuric acid was deep red, diluted to produce brown yellow precipitation; In concentrated nitric acid was purple red, diluted into brown yellow precipitation. Resistance to alkaline hydrolysis, not acid hydrolysis. reactive yellow 4 is also called reactive yellow X-RG, which is a kind of three kinds of reactive dyes. Can be low temperature fixation, suitable for cold dyes. High reactivity, can be in the 20~40 ℃ alkaline medium in solid color fiber, alkali hydrolysis, acid hydrolysis. Mainly used for cotton, silk, nylon fiber and viscose, wool fiber dyeing and bleaching. Can be applied to dye ice dye printing. |
Reactive Yellow X-RG - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | reactive yellow X-R is one of the commonly used dyes, mainly used for skein yarn of cotton or viscose fiber, the dyeing of fabrics and their blends is generally not suitable for printing. The color light used alone is red and yellow, and the fastness is excellent, especially the resistance to chlorine bleaching. The fastness is a good variety of reactive dyes. It can be combined with reactive brilliant red X-3B, reactive brilliant blue X-BR and reactive brilliant orange X-GN to dye various light colors. When used for dyeing blended fabrics, polyester, acrylic and acetate fibers are not stained with color, wool is slightly stained with color, and nylon and Vinylon are stained with color. Can be used for nylon, silk, wool dyeing, can also be used for direct printing of silk. |
| production method | with amino C acid, M-toluidine, cyanuric chloride as raw materials, the first amino C acid diazotization, it is then coupled with M-toluidine, followed by condensation of the coupling product with cyanuric chloride, salting out, filtration, and drying to obtain a finished product. |
Last Update：2024-04-09 21:04:16
