Youhaoreactive Brilliant Blue K-3R.
Reactive Blue 74
CAS: 12677-16-6
Molecular Formula: C28H23ClN6O9S2.2Na
Youhaoreactive Brilliant Blue K-3R. - Names and Identifiers
Youhaoreactive Brilliant Blue K-3R. - Physico-chemical Properties
| Molecular Formula | C28H23ClN6O9S2.2Na |
| Physical and Chemical Properties | Dark blue powder. The solubility in water (50 °c) was 140g/L. The aqueous solution was red and brilliant blue, and was still brilliant blue when added with 1mol/L sodium hydroxide. Continue to add sodium hydrosulfite and warm, turn to golden yellow, then add sodium perborate to turn to light yellow. In concentrated sulfuric acid, it is blue-black, and after dilution, it is turned to Tibetan blue; In concentrated nitric acid, it is turned from blue to brown, and after dilution, it is turned to brown-yellow. |
Youhaoreactive Brilliant Blue K-3R. - Reference Information
| Introduction | Reactive blue 74 is a dark blue powder with a solubility in water (50 °c) of 140g/L. The aqueous solution was red and brilliant blue, and was still brilliant blue when added with 1mol/L sodium hydroxide. Continue to add sodium hydrosulfite and warm, turn to golden yellow, then add sodium perborate to turn to light yellow. It can be used for the pad dyeing and printing of cotton and viscose fabrics. |
| Application | Reactive blue 74 can be used for pad dyeing and printing of cotton and viscose fabrics. |
| Use | reactive brilliant blue K-3R is used for dyeing cotton and viscose fiber, with bright color, but deep dyeing, the color amount is poor, suitable for light color, high cost. It is also used for direct printing of cotton and viscose fabrics, anti-dyeing printing, printing of silk and wool fabrics, and direct printing of cotton blended fabrics. for pad dyeing and printing of cotton and viscose fabrics |
| production method | with bromamic acid, 2,4, 6-trimethyl-3, 5-diaminobenzenesulfonic acid, cyanuric chloride, ethanol as the main raw material, respectively, the Bromo acid and 2,4, 6-trimethyl-3, 5-diaminobenzenesulfonic acid condensation, cyanuric chloride and ethanol condensation, the two condensation products were then subjected to a third condensation, salting out, filtration, and drying to give the finished Reactive blue 74. |
Last Update：2024-04-09 21:32:02
