Acid Yellow GN
Acid Yellow 117
CAS: 6459-70-7
Molecular Formula: C39H30N8O8S2.2Na
Acid Yellow GN - Names and Identifiers
| Name | Acid Yellow 117 |
| Synonyms | Acid Yellow GN Acid Yellow 117 POLAR YELLOW GN C.I. Acid yellow 117 Triacid Light Yellow G. Acid Brilliant Yellow G C.1.Acid Yellow 116(24820) Benzenesulfonic acid, 4, 4'-[(phenylmethylene)bis[4, 1-phenyleneazo(4, 5-dihydro-3-methyl-5-oxo-1H-pyrazole-4, 1-diyl)]]bis, disodium salt |
| CAS | 6459-70-7 |
| EINECS | 232-655-5 |
Acid Yellow GN - Physico-chemical Properties
| Molecular Formula | C39H30N8O8S2.2Na |
| Molar Mass | 848.826 |
| Physical and Chemical Properties | Light yellow powder. Soluble in water, the aqueous solution is yellow, and the addition of hydrochloric acid or sodium hydroxide solution is converted into bright yellow. Orange in concentrated sulfuric acid; Yellow filamentous in concentrated nitric acid. The color of copper ion was dark green when it was dyed; The color of iron ion and chromium ion changed slightly when it was dyed. |
Acid Yellow GN - Reference Information
| Use | weak acid yellow G is mainly used for dyeing wool, silk, nylon and wool, silk, nylon, direct printing of viscose fabrics can also be used with direct dyes to dye wool-viscose blended fabrics in the same bath. Levelness and discharge were good. Also used in the dyeing of leather. |
| production method | with 4,4 '-diaminotriphenylmethane, 1-(p-sulfophenyl)-3-methyl-5-pyrazolone as a starting material, the former is first double nitrided, and then coupled with the latter to obtain the product. The final product was obtained by filtration and drying.. 400L of water, 30% of hydrochloric acid, 131.4 and 49.4 of 4,4 '-diaminotriphenylmethane were added to the diazonium Pan, stirred and dissolved, and cooled to 0 °c. A 30% sodium nitrite solution (26.2 NaNO2) was then added over 15min. After addition, stirring was continued for 45min to obtain diazo solution. Add 300L of water and 55kg of soda ash to the coupling pan, stir and dissolve, then add 90kg of 1- (p-sulfophenyl)-3-methyl-5-pyrazolone, stir and dissolve, the temperature is cooled to below 10 ℃, and the above diazo liquid is added within 40min, and the pH value is adjusted to about 7.5 with soda ash solution at the same time. After addition, stirring was continued for 1H, and then the temperature was raised to 90 ° C., salt was added for salting out, cooled to 75 ° C., filtered and dried to obtain about 310kg of product. |
Last Update：2024-04-09 20:45:29
