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Molybdic acid

CAS Number
7782-91-4
EC Number
231-970-5
Chemical Formula
H.1/2MoO4
Molecular Weight
161.96 g/mol

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. Contact us for supply of Molybdic acid Request Quote

Other Names (Synonyms)

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)-

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point300 °C
Density3.1 g/mL at 25 °C(lit.)
Appearancewhite to slightly yellow powder
ColorWhite powder
OdorOdorless
Formwhite powder
Water Solubility70 g/l (20 ºC)
pH3.46(1 mM solution)
2.94(10 mM solution)
2.43(100 mM solution)

Safety & Handling

Warning
GHS07· IrritantGHS08· Health Hazard

Hazard Statements

H319Causes serious eye irritation
H335May cause respiratory irritation
H351Suspected of causing cancer
H373May causes damage to organs through prolonged or repeated exposure

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code28111990
Storage Class11 - Combustible Solids
WGK (Germany)3