Chemistry:Zinc molybdate
From HandWiki
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3D model (JSmol)
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| Properties | |
| ZnMoO4 | |
| Molar mass | 225.33 g/mol |
| Appearance | white tetragonal crystals |
| Density | 4.32 g/cm3[2] |
| Melting point | 900 °C (1,650 °F; 1,170 K) |
| insoluble | |
| Structure | |
| tetragonal | |
| Hazards | |
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| GHS Signal word | Warning |
| H315, H319, H335, H411 | |
| PP261Script error: No such module "Preview warning".Category:GHS errors, PP264Script error: No such module "Preview warning".Category:GHS errors, PP264+P265Script error: No such module "Preview warning".Category:GHS errors, PP271Script error: No such module "Preview warning".Category:GHS errors, PP273Script error: No such module "Preview warning".Category:GHS errors, PP280Script error: No such module "Preview warning".Category:GHS errors, PP302+P352Script error: No such module "Preview warning".Category:GHS errors, PP304+P340Script error: No such module "Preview warning".Category:GHS errors, PP305+P351+P338Script error: No such module "Preview warning".Category:GHS errors, PP319Script error: No such module "Preview warning".Category:GHS errors, PP321Script error: No such module "Preview warning".Category:GHS errors, PP332+P317Script error: No such module "Preview warning".Category:GHS errors, PP337+P317Script error: No such module "Preview warning".Category:GHS errors, PP362+P364Script error: No such module "Preview warning".Category:GHS errors, PP391Script error: No such module "Preview warning".Category:GHS errors, PP403+P233Script error: No such module "Preview warning".Category:GHS errors, PP405Script error: No such module "Preview warning".Category:GHS errors, PP501Script error: No such module "Preview warning".Category:GHS errors | |
| NFPA 704 (fire diamond) | |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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11,500 mg/kg (oral, rat)[3] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
 verify (what is   ?)
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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.[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
- ↑ 2.0 2.1 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. https://www.sciencedirect.com/science/article/pii/S0272884215016193.
- ↑ 3.0 3.1 G. Etzrodt (2012). "Ullmann's Encyclopedia of Industrial Chemistry". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. pp. 351,355. doi:10.1002/14356007.n20_n04.
- ↑ PubChem. "Molybdenum zinc oxide (MoZnO4)" (in en). https://pubchem.ncbi.nlm.nih.gov/compound/16213780.
- ↑ 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.
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