Molybdenum trioxide

Molybdenum trioxide (CAS 1313-27-5), also known as molybdic anhydride, is an inorganic molybdenum compound used as a functional pigment and biocidal agent in coatings and surface treatment.

Where is Molybdenum trioxide used?

• Protective coatings and primers: corrosion-inhibiting pigment
• Metal protection: replacement for chromate-based systems under regulatory pressure
• Textile and leather processing: mordant and fixative that improves dye uptake and wash fastness
• Printing inks and packaging coatings: biocidal and preservative functionality
• Adhesives and sealants: antimicrobial performance alongside adhesion to metal or polymer surfaces
• It also serves as a precursor in specialty chemical manufacturing.
• Industrial catalyst.

Typical specification

• High-purity molybdenum trioxide is supplied at 99.5% to 99.95% purity.
• High-solubility molybdenum trioxide is subdivided into MoO3-0, MoO3-1 and MoO3-2 (alloy addition) grades according to the use scenario.
• High-solubility molybdenum trioxide has a high bulk ratio and excellent flowability, suitable for pressing, alloy mixing or reaction distribution.
• Molybdenum trioxide is available in powder form with a maximum size of 16 mm.
• Particle size, specific surface area and bulk ratio of molybdenum trioxide can be customized to customer process requirements.

Regulatory status

• Molybdenum trioxide is a chemical substance within the scope of the Turkish KKDIK Regulation.
• Molybdenum trioxide has a harmonised CLP classification under Regulation (EC) 1272/2008.
• Annual manufacture or import of 1 tonne or more triggers a KKDIK registration obligation.

Storage, packaging and handling

• Molybdenum trioxide is stored in its original packaging and under the conditions specified in the safety data sheet (SDS).

Frequently asked questions about Molybdenum trioxide

Is a Turkish Safety Data Sheet required for molybdenum trioxide?

A Turkish Safety Data Sheet compliant with the SEA Regulation is mandatory for this substance and mixtures containing it because it carries a hazardous classification.

What are the solubility characteristics of molybdenum trioxide?

Molybdenum trioxide is insoluble in water but soluble in alkaline solutions and ammonia water.

Technical content is compiled and updated by the SoleChem product team from public technical sources; the certificate of analysis (COA) governs product-specific specifications.