Sodium dichromate

Sodium dichromate (CAS 10588-01-9), also known as sodium bichromate, is an inorganic chromium(VI) salt; a strong oxidizing agent and corrosion inhibitor.

Where is Sodium dichromate used?

• Metal finishing and anticorrosion: passivation agent for aluminum, zinc, and magnesium surfaces, forming protective oxide layers
• Leather: precursor in chrome tanning processes
• Mining and metallurgy: ore processing and flotation reagent for separating sulfide minerals
• Pulp and paper: bleaching oxidant
• Pigments: production of chromate-based pigments for specialty papers and coatings
• It is one of the most commercially significant hexavalent chromium compounds, used in metal surface treatment and chemical synthesis.

Commercial specifications

• Dihydrate is the most common commercial grade
• Technical grade at high purity concentrations
• Packaging from drums to bulk quantities