Solvent Black 34

Preparation

2-Amino-5-nitrophenol diazo, and Naphthalen-2-ol coupling, and then into a chrome complex (1 to 2 Moore single atoms chromium azo dyes).

Properties and Applications

blue ash. Deep yellow powder. Slightly soluble in water, soluble in ethylene glycol ether, DMF, ethanol, and other organic solvents. Its solution for brown. Dye bath of copper ions slight changes in color, iron ion in the same light. Used for wool, polyamide fiber dyeing, nylon fabric can be in directly on printing. Mainly used for pigskin, such as cow leather, goat natural leather finishing the spray or curtains, especially suitable for aniline leather spraying shading.