Magnesium chromate

Chemical compound From Wikipedia, the free encyclopedia

Magnesium chromate is an inorganic compound with the chemical formula MgCrO4. It is a yellow, odorless, water-soluble salt. It is available commercially in a variety of powders, from nanoscale to micron-sized, either as an anhydrous or hydrated form.[2][3]

Quick facts Names, Identifiers ...
Magnesium chromate
Names
Other names
Magnesium chromate(VI)
Magnesium monochromate
Magnesium monochromate(VI)
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.204 Edit this at Wikidata
  • InChI=1S/Cr.Mg.4O/q;+2;;;2*-1
    Key: CRGGPIWCSGOBDN-UHFFFAOYSA-N
  • InChI=1/Cr.Mg.4O/q;+2;;;2*-1/rCrO4.Mg/c2-1(3,4)5;/q-2;+2
    Key: CRGGPIWCSGOBDN-OVNOGNLDAB
  • [O-][Cr](=O)(=O)[O-].[Mg+2]
Properties
MgCrO4
Molar mass 140.297 g·mol−1
Appearance Yellow solid
soluble
Hazards
GHS labelling:[1]
GHS05: CorrosiveGHS06: ToxicGHS07: Exclamation markGHS08: Health hazardGHS09: Environmental hazard
Danger
H301, H312, H315, H317, H318, H330, H335, H340, H350, H410
P203, P260, P264, P264+P265, P270, P271, P272, P273, P280, P284, P301+P316, P302+P352, P304+P340, P305+P354+P338, P316, P317, P318, P319, P320, P321, P330, P333+P317, P362+P364, P391, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Uses

As a hydrate, it is useful as a corrosion inhibitor and pigment.[4]

History

Before 1940, the literature about magnesium chromate and its hydrates was sparse, but studies starting in that year looked at its properties and solubility.[5]

In 2011, an undecahydrate (containing 11 molecules of water) of this compound was discovered.[6]

References

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