The most cost-effective Direct Copper Blue 2R For Dyeing Paper
Product Specification
| Name | Direct Copper Blue 2R |
| Other Name | Direct Blue 151 |
| Cas No. | 110735-25-6 |
| Appearance | Blue-black Powder |
| Packing | 25KGS PP Bag/Kraft Bag/Carton Box/Iron Drum |
| Strength | 100%, conc150% |
| Application | Mainly used for dyeing cotton, viscose fiber, can also be used for leather, silk, paper and so on. |
Description
It's a blue-black pink, and in water it's a blue-purple solution. Production process: Bianiside, J acid and NW acid are used as basic raw materials. Diamination of bianiside with sodium nitrite and sulfuric acid; Sodium J acid and NW acid are oxidized with oxygen to form salt. Then, the diazide J acid and NW acid were combined, and finally obtained by salting out, filtering and drying.
Product character
The product character of Direct Copper Blue 2R includes:
Physical form: Blue - black powder, soluble in water blue - purple solution, still soluble in alcohol red - purple. In case of concentrated sulfuric acid is green blue, after dilution is tight color. The grass aqueous solution is purple in the presence of concentrated hydrochloric acid, and the concentrated sodium ammoxide solution is reddish purple to wine red. For cellulose fiber dyeing, dye absorption is very good at 100℃ the maximum affinity, good dyeing. Mainly used for dyeing cotton, viscose fiber, can also be used for leather, silk, paper and so on.
Main features
The main features of Direct Copper Blue 2R include:
A.Direct Copper Blue 2R is one of the dye varieties. It is mainly used for dyeing and direct printing of cotton, viscose fiber and cotton, viscose fiber and silk, wool interwoven blended fabrics.
B.Purpose: Mainly used for dyeing cellulose fibers such as cotton, hemp and viscose, can also be used for dyeing viscose/polyamide wet textiles, can also be used for leather and paper dyeing. After treatment with copper sulfate during dyeing, it can improve the fastness to sunlight. After treatment with formaldehyde, it can improve its washing fastness. Now L acid has been developed to replace NW acid to make direct copper salt blue M, the color light is slightly darker than direct copper salt blue 2R.
C.The dyeing rate is good, but the dyeing transferability is a little worse. After dyeing, it can be treated with fixing agent Y and fixing agent M.
Translated with www.DeepL.com/Translator (free version)
Storage & Transportation
The product must be stored in shade, dry & well-ventilated warehouse. Avoid to be contacted with oxidizing chemicals and combustible organic substances. Keep it away from direct sunlight, heat, sparks and open flames. Carefully handle the product and avoid damaging the package.
Application
It is mostly used for dyeing paper，It can also be used for dyeing rayon silk and wool so on.
Packing
25KGS PP Bag/Kraft Bag/Carton Box/Iron Drum
