Suppliers of Acid Black 2 (NIGROSINE BLACK) Acid Black 2 application :- Acid Black 2 is recommended for leather as coloring agent. It is also used for coloring silk, wool, flax, metallic products, water base inks &; stationary. Typical Physical Properties :- Appearance - Black powder Shade - Similar to std. Concentration - 100 % Moisture - 2.0 % max Ash - 15.0 % max.
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