| Name | Reactive Red KD-8B |
| Synonyms | Reactive Red KD-8B |
| Molecular Formula | C52H30Cl2N14O20S6.6Na |
| Physical and Chemical Properties | Chemical properties blue pink powder. The aqueous solution is blue-red, and the addition of 1mol/L sodium hydroxide solution is yellow and red, followed by the addition of hydrosulfite and warm it is light yellow, and the addition of sodium perborate is still yellow. It is reddish purple in concentrated sulfuric acid, red after dilution, and accompanied by precipitation. It is red in concentrated nitric acid and orange-red after dilution. |
| Use | Use 1, active red KD-8B can be used for cotton, viscose fiber dyeing, high affinity, levelness is poor, should be improved by levelling agent. It is also used for direct printing of cotton and viscose fiber fabrics, but the effect is poor, and the fixing agent can be added. It is also used for Vinylon dyeing. 2, used for cotton or viscose fiber dyeing, suitable for dyeing and winding |
using h acid, cyanuric chloride, DSD acid and aniline as raw materials, firstly, h acid and cyanuric chloride are condensed for the first time, then aniline is diazotized, coupled with the first condensation product, and finally, the coupling product and DSD acid are condensed for the second time to obtain the product. The finished product is salted out, filtered and dried.