Sodium molybdate dihydrate

Sodium molybdate dihydrate (CAS 10102-40-6) is an inorganic molybdenum salt used in industrial water systems and surface treatment, primarily as a corrosion inhibitor.

Where is Sodium molybdate dihydrate used?

• Industrial water treatment: dosed into cooling water circuits and heating systems to inhibit corrosion of steel, copper and aluminum
• Surface treatment: forms a stable passivation layer, reducing metal loss in closed-loop and open recirculating systems
• Replacement for chromate-based inhibitors where environmental regulations apply
• Textile and leather: mordant and fixative in dyeing, improving color fastness and dye uptake on natural and synthetic fibers
• Agriculture: micronutrient source in fertilizer formulations and foliar sprays, correcting molybdenum deficiency in legumes and brassicas
• Printing and packaging: pigment component in molybdate orange and red colorants for inks and coatings.

Commercial specifications

• Technical and agricultural grades, purity typically 98–99% on a dry basis