The most cost-effective Direct Copper Blue 2R For Dyeing Paper

Short Description:

1.Direct Copper Blue 2R

2. Blue-black Powder

3.It has great affinity for cellulose fibers and can dye cellulose fibers directly on neutral media.

4.Directly soluble in water, easy to use, without the use of chemical methods to color fibers and other materials dyes

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Product Detail

Product Tags

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.

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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.