| Name | Reactive Blue BRF |
| Synonyms | Reactive Blue BRF Indofix Blue MERI Cosmozol Blue BRF Pidictive Blue BRF Reactive Blue M-BRE Monaryl Supra Blue BRF Sumifix Supra Blue BRF. |
| Molecular Formula | C33H24ClN9O18S5.4Na.Cu |
| Physical and Chemical Properties | Chemical nature blue powder. Easily soluble in water, the solubility in water is 60g/L (50 ℃). |
| Use | Purposes Reactive blue M-BRE is suitable for cotton, viscose fiber dyeing, can also be used for polyester-cotton, polyester-viscose blended fabric one-bath dyeing. High temperature stability is good, the dyeing fastness is excellent. |
Using 2-amino -4-sulfonic benzoic acid, 2-amino -4-sulfonic acid -6-nitrophenol, 2-sulfonic benzaldehyde, m (β-sulfate ethyl sulfone group)-N-ethylaniline and cyanuric chloride as raw materials, first 2-amino -4-sulfonic benzoic acid is diazotized and reduced, and condensed with 2-sulfonic benzaldehyde, then the 2-amino -4-sulfonic acid -6-nitrophenol is diazotized, coupled with the aforementioned condensation product, and then added copper sulfate complexation, and then reduced the nitro to a blue-based dye. Then the m (β-sulfate ethyl sulfone group)-N-ethylaniline and cyanuric chloride are condensed for the first time, and then the blue-based dye is condensed for the second time to obtain the product. The finished product is salted out, filtered and dried.