Direct Cooper Blue 2R

Application Of Direct Copper Blue 2R

Direct Copper Blue 2R mainly used for dyeing cellulose fiber fabrics such as cotton, linen, and viscose, and can also be used for dyeing viscose/nylon blended fabrics. In other aspects, it can also be used for coloring leather and pulp.

Packing Of Direct Copper Blue 2R

Direct Copper Blue 2R packing in 25kg lron Drum/Bag, or as per the requirements of customers.

Storage & Transportationy: it must be stored dry & cool 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.

What Is Direct Copper Blue 2R

Direct Copper Blue 2R is blue powder. Soluble in water, it appears as a blue purple solution, and soluble in ethanol, it appears as a red purple solution. When encountering strong bowl acid, it turns emerald blue, and when diluted, it turns purple. Direct Copper Blue 2R aqueous solution may precipitate purple when encountering concentrated hydrochloric acid; When encountering concentrated sodium oxide, it turns red purple to wine red. For cellulose fiber dyeing, Direct Copper Blue 2R absorption is very good, and the affinity is highest at 100 ℃ with good discharge performance. Copper sulfate treatment during dyeing can improve the light fastness, and formaldehyde post-treatment can improve its washing fastness.