Cuprous iodide

Cuprous iodide (CAS 7681-65-4), also known as CuI and commercially as Marshite, is an inorganic copper salt.

Where is Cuprous iodide used?

• Pharmaceutical and fine chemical manufacturing: primary catalyst and co-catalyst in Ullmann coupling and Sonogashira cross-coupling
• Textile and technical fabrics: antimicrobial agent imparting durable biocidal properties to fibers and coatings
• Personal care: surface-active antimicrobial component
• Hygiene products: sustained microbial control
• Salt iodization and nutritional fortification: stabilized iodine carrier in food-grade and feed applications
• It enables the construction of complex organic molecules at scale.

Good to know: Moisture-controlled packaging is standard due to light and humidity sensitivity. Hydro-Giene is a recognized trade designation in hygiene and textile treatment contexts.

Commercial specifications

• Purity typically 98% to 99.5%+
• Packaging from small laboratory quantities to bulk industrial formats