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The production of Solvent Black 3

Solvent Black 3 is black powder,it is also known as Sudan Black B. It is of good thermal resistant ability, good light fastness and strong dyeing power. And soluble in ethanol, toluene and acetone. Solvent Black 3 is used in coloring of plastics, printing ink and writing ink, etc.
With aniline, 1-naphthylamine, 2, 3 dihydro - 2, 2 - methyl pyridine as raw material. First of all, the diazotization, aniline and 1-naphthylamine coupling, then diazotization with coupling product , and 2, 3 dihydro - 2, 2 - dimethyl pyridine coupling product. After filtering, drying the finished product--Solvent Black 3.
TongShun Chemical Co, Ltd, set up in 2008, is a modern enterprise manufacturing solvent dyes, fluorescent pigments dyes and dyestuff intermediates. Currently, our products are exported to dozens of countries abroad.
Our solvent dyes and pigments are widely used in plastic, fiber masterbatch, paint, printing ink, etc.; most of our products comply with relative EU legislation in regard to heavy metal and aromatic amine. Quality and innovation are what we guarantee to achieve customers’satisfactions.