Bismuth

Bismuth (CAS 7440-69-9), abbreviated Bi, is a post-transition metal traded in elemental form for pharmaceutical synthesis, polymer manufacturing, and metallurgical processing.

Where is Bismuth used?

• Pharmaceuticals: precursor to active bismuth salts and compounds in gastrointestinal and antimicrobial preparations
• Polymers: flame-retardant systems requiring halogen-free compliance, notably wire, cable, and electronic component housings
• Specialty chemicals: catalyst or catalyst precursor in oxidation and condensation reactions
• Metallurgy: lead replacement in free-machining alloys and low-melting fusible alloys for safety devices and precision casting
• It serves as a low-toxicity alternative to lead and other heavy metals where regulatory pressure or end-product safety requirements demand cleaner substitutes.

Commercial specifications

• Standard commercial grades range from technical purity to high-purity material for pharmaceutical and electronic applications where particle size control is critical.