Zinc molybdate

Zinc molybdate[1]
Identifiers
ECHA InfoCard 100.033.965
Properties
ZnMoO4
Molar mass 225.33 g/mol
Appearance white tetragonal crystals
Density 4.3 g/cm3, solid
Melting point 900 °C (1,650 °F; 1,170 K)
insoluble
Structure
tetragonal
Hazards
not listed
NFPA 704
Flammability code 0: Will not burn. E.g., waterHealth code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroformReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogenSpecial hazards (white): no codeNFPA 704 four-colored diamond
0
2
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Zinc molybdate (ZnMoO4) is an inorganic chemical compound. It is a white pigment, which can be used as corrosion inhibitor. 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 interesting alternative to these salts for corrosion inhibition.The insoluble zinc molybdate will crystallize from this mixture of soluble salts without much trouble.

References

  1. ↑ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–95, ISBN 0-8493-0594-2


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