Sodium selenite

Sodium selenite (CAS 10102-18-8), also designated Na2SeO3, is an inorganic selenium compound used as a controlled selenium source in nutritional, agricultural and pharmaceutical manufacturing.

Where is Sodium selenite used?

• Animal feed: incorporated into premixes and mineral supplements to meet selenium requirements
• Livestock and poultry: addresses deficiency causing muscular disorders and reduced reproductive performance
• Pharmaceuticals: active selenium source in parenteral nutrition solutions
• Dietary supplements: tablets targeting selenium-deficient populations
• Human food fortification: added at regulated trace levels to functional foods and nutritional products
• Fertilizer and agrochemicals: foliar sprays and soil treatments to correct selenium-deficient growing conditions
• It delivers a bioavailable form of the trace mineral selenium where precise, low-level dosing is required.

Good to know: Packaging is handled under strict containment protocols given the low exposure levels.

Commercial specifications

• Purity typically 98% or higher