Direct Fast Black G

Application Of Direct Fast Black G

Direct Fast Black G is a substitute for the direct black BN of benzidine structure, mainly used for dyeing and printing of viscose. It is also used in cotton knitted fabrics, woolen blankets, velvet fabrics, etc. It can also be used to dye silk, viscose silk interwoven fabrics, wool and viscose blended fabrics. After dyeing, dye fixing agents Y or M can be used for post-treatment. It can also be used for dyeing leather and paper, as well as coloring electroplated aluminum.

Packing Of Direct Fast Black G

Direct Fast Black G 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 Fast Black G

Direct Fast Black G is black powder. Soluble in water with a green black color and a solubility of 100g/L (80 ℃), slightly soluble in ethanol and acetone. When exposed to concentrated sulfuric acid, it appears green and black, and after dilution, there is a red and black precipitate; Direct Fast Black G turns dark brown when exposed to concentrated nitric acid. Dye aqueous solution turns slightly red when exposed to 10% sulfuric acid; When encountering concentrated sodium hydroxide solution, it turns green and blue. Encountering copper colored light with a slight green hue; Direct Fast Black G have a slight change in iron colored light.