Zinc molybdate

Zinc molybdate^[1]
Identifiers
CAS Number	13767-32-3 ;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.033.965
EC Number	237-377-8;
PubChem CID	16213780;
UNII	302KZX2NIS ;
CompTox Dashboard (EPA)	DTXSID10893960 ;
	InChI InChI=1S/Mo.4O.Zn/q;;;2*-1;+2 Key: XAEWLETZEZXLHR-UHFFFAOYSA-N;
	SMILES [O-][Mo](=O)(=O)[O-].[Zn+2];
Properties
Chemical formula	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)
Solubility in water	insoluble
Structure
Crystal structure	tetragonal
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335, H411
Precautionary statements	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)	2 0 0
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	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). verify (what is ?) Infobox references

Zinc molybdate is an inorganic compound with the formula Zn MoO₄. It is used as a white pigment, which is also a corrosion inhibitor. A related pigment is sodium zinc molybdate, Na₂Zn(MoO₄)₂.^[3] The material has also been investigated as an electrode material.^[5]

In terms of its structure, the Mo(VI) centers are tetrahedral and the Zn(II) centers are octahedral.^[2]

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

^ 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
^ ^a ^b 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.
^ ^a ^b 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.
^ PubChem. "Molybdenum zinc oxide (MoZnO4)". pubchem.ncbi.nlm.nih.gov. Retrieved 2026-01-24.
^ 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.

External links

Improved corrosion-inhibiting pigments

[hand-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

[XRD-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.

[Ull-3] 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.

[4] PubChem. "Molybdenum zinc oxide (MoZnO4)". pubchem.ncbi.nlm.nih.gov. Retrieved 2026-01-24.

[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.

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