Sodium Dichromate Supplier in South Africa

What Is Sodium Dichromate?

Sodium dichromate (Na₂Cr₂O₇) is a water-soluble hexavalent chromium salt supplied as vivid orange-red crystals or as the dihydrate form. It is one of the most widely used chromium compounds in industry, serving as a precursor to chromic acid, a corrosion inhibitor, and a powerful oxidising agent. Its high water solubility and reactive Cr(VI) content make it valuable across several manufacturing sectors.

Chromating & Corrosion Protection

Sodium dichromate is a core ingredient in chromate conversion coating solutions applied to zinc, aluminium, cadmium, and magnesium substrates. These passivation layers provide outstanding corrosion resistance and serve as an adhesion promoter for subsequent paint systems. In the automotive and aerospace sectors, chromate-treated surfaces significantly extend component service life.

Leather Tanning & Textiles

Chrome tanning using sodium dichromate-derived chromium sulfate is the dominant global leather tanning method, producing soft, water-resistant hides used in footwear, upholstery, and garments. In textiles, sodium dichromate functions as a mordant, fixing dyes to natural fibres such as wool. The leather and textile industries in Southern Africa rely on consistent chromium salt supply for continuous production.

Chemical Synthesis & Industrial Oxidation

As a strong oxidant, sodium dichromate is used in the synthesis of chromium pigments, chromium sulfate, and other chromium chemicals. It oxidises organic compounds in batch reactions and serves as an intermediate in the production of chromium oxide green pigments. Regulatory compliance documentation is provided with every supply to assist users in meeting occupational exposure limits and waste management requirements.