Molybdic acid
Description
Molybdic acid (CAS 7782-91-4) is an inorganic molybdenum compound used industrially as a corrosion inhibitor and catalyst precursor. It delivers molybdate chemistry in solid form, making it a practical source material for downstream formulation.
This material is essential for processing across metal treatment, agriculture, and chemical manufacturing. In corrosion inhibitor formulations, it provides molybdate ions that passivate metal surfaces in cooling water systems and industrial coatings.
Catalyst manufacturers use it as a precursor to molybdenum-based catalysts applied in hydrodesulfurization, oxidation reactions, and petrochemical refining. These applications are critical for modern industrial efficiency and chemical synthesis.
In agriculture, it serves as a micronutrient source for molybdenum-deficient soils. It is frequently incorporated into fertilizer blends and foliar spray formulations to ensure optimal crop health and yield across various regions.
The mining and metals sector uses it in ore processing and as a starting material for producing molybdenum salts and pigments. This versatility makes it a staple component in heavy industrial manufacturing and mineral processing.
Molybdic acid is supplied as a white to slightly yellow powder. It is available in technical grade, with purity levels typically specified at 85% or higher MoO₃ equivalent, depending on the specific application requirements.
Packaging ranges from small laboratory quantities to bulk industrial supply. Specifications are confirmed against buyer requirements for catalyst or agricultural use to ensure the highest performance standards in every batch delivered.
Physical Properties
| Melting Point | 300 °C |
| Density | 3.1 g/mL at 25 °C(lit.) |
| Appearance | white to slightly yellow powder |
| Color | White powder |
| Odor | Odorless |
| Form | white powder |
| Water Solubility | 70 g/l (20 ºC) |
| pH | 3.46(1 mM solution);2.94(10 mM solution);2.43(100 mM solution) |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 28111990 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 3 |
Documentation
Other Names
molybdic(VI) acid|H2MoO4|[MoO2(OH)2]|Molybdate (MoO42-), dihydrogen, (T-4)-|I96N991J1N|RefChem:819194|dihydroxy(dioxo)molybdenum|Molybdate (MoO42-), hydrogen (1:2), (T-4)-
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