white crystals (anhydrous) yellow crystals (monohydrate)
Density
3.112 g/cm3 (anhydrous) 3.124 g/cm3 (monohydrate)
Melting point
300 °C (572 °F; 573 K)[1]
Solubility in water
1510 mg dm−3 Soluble in 10% ammonia 35gm/lt
Structure
Crystal structure
hexagonal (anhydrous) monoclinic (monohydrate)
Hazards
GHS labelling:[2]
Pictograms
Signal word
Warning
Hazard statements
H319, H335, H373
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
Molybdic acid refers to hydrated forms of molybdenum trioxide and related species. The monohydrate (MoO3·H2O) and the dihydrate (MoO3·2H2O) are well characterized. They are yellow diamagnetic solids.
Molybdicacid refers to hydrated forms of molybdenum trioxide and related species. The monohydrate (MoO3·H2O) and the dihydrate (MoO3·2H2O) are well characterized...
in color. Molybdenum trioxide dissolves slightly in water to give "molybdicacid". In base, it dissolves to afford the molybdate anion. Molybdenum trioxide...
compounds. It is composed of a mixture of molybdicacid or a molybdate salt dissolved in hot, concentrated sulfuric acid, which is then dripped onto the substance...
molybdenum. MoS 2 is relatively unreactive. It is unaffected by dilute acids and oxygen. In appearance and feel, molybdenum disulfide is similar to graphite...
Alexander (1953): "The Reaction of Low Molecular Weight Silicic Acids with MolybdicAcid". Journal of the American Chemical Society, volume 75, issue 22...
forms quadruple bonds, such as in Mo2(CH3COO)4 and [Mo2Cl8]4−. The Lewis acid properties of the butyrate and perfluorobutyrate dimers, Mo2(O2CR)4 and Rh2(O2CR)...
Alexander (1953): "The Reaction of Low Molecular Weight Silicic Acids with MolybdicAcid". Journal of the American Chemical Society, volume 75, issue 22...
heptamolybdate. Solutions of ammonium paramolybdate react with acids to form molybdicacid and an ammonium salt. The pH value of a concentrated solution...
prepared by treatment molybdenum trioxide with concentrated hydrochloric acid: MoO3 + 2 HCl → MoO2Cl2 + H2O MoO2Cl2 can also be prepared from MoOCl4: MoOCl4...
in concentrated hydrochloric acid or hydrogen peroxide, but easily soluble in nitric acid, hot concentrated sulfuric acid and aqua regia. "Molybdenum Arsenide...
certain chemical substances such as molybdicacid, arsenic, or phosphoric acid or soluble salts of tungstic acid. Dunging is followed by printing and...
molybdenum sulfide with nitric acid to form molybdicacid, which is then mixed with tin filings and a little muriatic acid (HCl). This is evaporated and...
its discovery by Swedish chemist Carl Wilhelm Scheele. Working with Molybdicacid, Hjelm chemically reduced molybdenum oxide with carbon in an oxygen-free...
hexagonal and unstable. It is insoluble in most acids but soluble in nitric acid and hydrofluoric acid. While MoSi2 has excellent resistance to oxidation...
also be prepared from heating of a mixture of molybdenum and metaphosphoric acid in a carbon crucible: 2 Mo + 2 HPO3 + 5 C → 2 MoP + 5 CO + H2O Other reactions...
Global Information
