Calcium molybdate

Calcium molybdate (CAS 7789-82-4) is an inorganic salt supplying both calcium and molybdenum in a stable, low-solubility form.

Where is Calcium molybdate used?

• Anticorrosion coatings and primers: pigment-grade inhibitor replacing chromate-based systems in metal protection for steel and aluminum substrates
• Lubricants: incorporated into greases and metalworking fluids for high-temperature or high-load conditions demanding a molybdenum-based friction modifier
• Steel and specialty alloy production: molybdenum source during smelting, a controlled-release alternative to molybdic oxide or ferromolybdenum
• Agriculture: micronutrient fertilizer additive correcting molybdenum deficiencies in various soil types
• Legume and brassica crops require it for nitrogen fixation and enzyme activity.

Commercial specifications

• Purity typically 98% or higher on a MoO₃ or elemental Mo basis
• Particle size distribution is a key specification for coating and lubricant grades; custom milling commonly available