Direct copper orchid 2B
Direct Blue 151
CAS: 110735-25-6
Molecular Formula: C34H25N5O10S2.2Na
Direct copper orchid 2B - Names and Identifiers
Direct copper orchid 2B - Physico-chemical Properties
| Molecular Formula | C34H25N5O10S2.2Na |
| Molar Mass | 773.708 |
| Physical and Chemical Properties | Blue-black powder. Dissolved in water blue purple solution, is still soluble in alcohol red purple. In case of concentrated sulfuric acid, the color was Alexandrite, purple after dilution. The aqueous solution was purple precipitated with concentrated hydrochloric acid, and the concentrated sodium hydroxide solution was red-purple to wine-red. For the dyeing of cellulose fibers, the dye absorption is very good, and the affinity of the temperature is the maximum at 100. Good discharge. |
Direct copper orchid 2B - Reference Information
| purpose | is mainly used for dyeing cellulose fibers such as cotton, hemp and viscose, it can also be used for the dyeing of viscose/nylon blended fabrics, and can also be used for the dyeing of leather and paper. The light fastness can be improved by post-treatment with copper sulfate during dyeing. The washing fastness can be improved by post-treatment with formaldehyde. Direct copper salt blue M has been developed with L acid instead of NW acid, and the color light is slightly blue and dark compared with direct copper salt blue 2R. |
| production method | the basic raw materials are GA, J acid and NW acid. Diazotization of anisamine with sodium nitrite and sulfuric acid; Neutralization with sodium hydroxide J acid and NW acid to salt. The diazonium compound J acid and the NW salt are then coupled and finally obtained by salting out, filtering and drying. Kg/t GA Anisidine (100%) 162J acid (100%) 150NW acid (100%) 150 sodium nitrite 105 sulfuric acid (100%) 130 soda ash 400 sodium hydroxide (100%) 30 refined salt, 1000 yuan powder, 140 Taigu oil 7 |
Last Update：2024-04-10 22:29:15
