Chromium bisulfate

Chromium bisulfate (CAS 39380-78-4), also known as basic chromium sulphate, is an inorganic chromium salt used in tanning, textile processing, and metal surface treatment.

Where is Chromium bisulfate used?

• Leather manufacturing: principal tanning agent in chrome tanning processes, producing soft, heat-stable hides with consistent dyeability
• Textile processing: mordant that fixes dyes onto natural fibers, improving wash and light fastness
• Metal surface treatment: conditions and prepares substrates prior to plating or coating
• Mining and hydrometallurgy: supports selective precipitation and separation steps
• It functions as a fixative and surface-modifying agent, enabling durable bonding between substrates and subsequent treatment layers.

Commercial specifications

• Technical-grade material specified by chromium oxide content, typically expressed as Cr₂O₃ percentage
• Bulk packaging in bags or supersacks