Zinc molybdate

Zinc molybdate
Identifiers
3D model (JSmol)
ECHA InfoCard 100.033.965 Edit this at Wikidata
EC Number
  • 237-377-8
UNII
  • InChI=1S/Mo.4O.Zn/q;;;2*-1;+2
    Key: XAEWLETZEZXLHR-UHFFFAOYSA-N
  • [O-][Mo](=O)(=O)[O-].[Zn+2]
Properties
ZnMoO4
Molar mass 225.33 g/mol
Appearance white tetragonal crystals
Density 4.32 g/cm3
Melting point 900 °C (1,650 °F; 1,170 K)
insoluble
Structure
tetragonal
Hazards
GHS labelling:
GHS07: Exclamation markGHS09: Environmental hazard
Warning
H315, H319, H335, H411
P261, P264, P264+P265, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
0
0
Lethal dose or concentration (LD, LC):
11,500 mg/kg (oral, rat)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Zinc molybdate is an inorganic compound with the formula ZnMoO4. It is used as a white pigment, which is also a corrosion inhibitor. A related pigment is sodium zinc molybdate, Na2Zn(MoO4)2. The material has also been investigated as an electrode material.

In terms of its structure, the Mo(VI) centers are tetrahedral and the Zn(II) centers are octahedral.

Safety

While highly soluble molybdates like e.g. sodium molybdate are toxic in higher doses, zinc molybdate is essentially non-toxic because of its insolubility in water. Molybdates possess a lower toxicity than chromates or lead salts and are therefore seen as an alternative to these salts for corrosion inhibition.

References

  1. ↑ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–95, ISBN 978-0-8493-0594-8
  2. 1 2 Ait ahsaine, H.; Zbair, M.; Ezahri, M.; Benlhachemi, A.; Arab, M.; Bakiz, B.; Guinneton, F.; Gavarri, J. -R. (2015-12-01). "Rietveld refinements, impedance spectroscopy and phase transition of the polycrystalline ZnMoO4 ceramics". Ceramics International. 41 (10, Part B): 15193–15201. doi:10.1016/j.ceramint.2015.08.094. ISSN 0272-8842.
  3. ↑ PubChem. "Molybdenum zinc oxide (MoZnO4)". pubchem.ncbi.nlm.nih.gov. Retrieved 2026-01-24.
  4. 1 2 G. Etzrodt (2012). "Pigments, Inorganic 5. Anticorrosive Pigments". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. pp. 351, 355. doi:10.1002/14356007.n20_n04. ISBN 978-3-527-30673-2.
  5. ↑ Hu, Xianluo; Zhang, Wei; Liu, Xiaoxiao; Mei, Yueni; Huang, Yunhui (2015). "Nanostructured Mo-based electrode materials for electrochemical Energy Storage". Chemical Society Reviews. 44 (8): 2376–404. doi:10.1039/C4CS00350K. PMID 25688809. S2CID 205906132.