Chromium Trioxide Supplier in South Africa

What Is Chromium Trioxide?

Chromium trioxide (CrO₃), commonly known as chromic anhydride, is a dark red crystalline solid and one of the most powerful industrial oxidising agents. It dissolves readily in water to form chromic acid, making it the primary active ingredient in hard chrome and decorative chrome electroplating baths. Its strong oxidising character also makes it indispensable in surface conversion coatings and chemical synthesis.

Industrial Electroplating Applications

The primary use of chromium trioxide is in the formulation of chromic acid electroplating baths. Hard chrome plating deposits wear-resistant, low-friction coatings on engineering components such as hydraulic cylinders, rolls, and cutting tools. Decorative chrome plating provides bright, corrosion-resistant finishes on automotive trim, plumbing fixtures, and consumer goods.

Chemical Synthesis & Surface Treatment

Beyond plating, chromium trioxide serves as a selective oxidant in organic synthesis, converting primary and secondary alcohols to aldehydes, ketones, and carboxylic acids. It is also used in chromate conversion coatings on aluminium, zinc, and magnesium substrates to improve corrosion resistance and paint adhesion before further finishing steps.

Safe Handling & Regulatory Compliance

Chromium trioxide is classified as a Category 1A carcinogen and a strong oxidiser requiring strict handling controls. Terracore Chemicals supplies CrO₃ with full Safety Data Sheets, proper UN-classified packaging, and regulatory guidance to support compliant use under SANS, REACH, and applicable South African occupational health standards.