Magnesium chromate is a chemical compound, with the formula MgCrO4. It is a yellow, odorless, water-soluble salt with several important industrial uses. This chromate can be manufactured as a powder.
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| Names | |
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| Other names
Magnesium chromate(VI)
Magnesium monochromate Magnesium monochromate(VI) | |
| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.033.204 |
PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| MgCrO4 | |
| Molar mass | 140.297 g·mol−1 |
| Appearance | Yellow solid |
| soluble | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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History
editBefore 1940, the literature about magnesium chromate and its hydrates was sparse, but studies starting in that year looked at its properties and solubility.[1]
Uses
editIt is available commercially in a variety of powders, from nanoscale to micron-sized, either as an anhydrous or hydrated form.[2][3]
As a hydrate, it is useful as a corrosion inhibitor and pigment,[4] or as an ingredient in cosmetics.[5] In 2011, an undecahydrate (containing 11 molecules of water) of this compound was discovered by scientists at the University College London.[6]
Hazards
editMagnesium chromate hydrate should be stored at room temperature, and there is no current therapeutic use.[7] It is a confirmed carcinogen, and can cause acute dermititis, and possibly kidney and liver damage if inhaled, so it should be treated as a hazardous waste.[8]
References
edit- ^ Hill, Arthur E.; Soth, Glenn C.; Ricci, John E. (1940). "The Systems Magnesium Chromate—Water and Ammonium Chromate—Water from 0 to 75 °C". Journal of the American Chemical Society. 62 (8): 2131. doi:10.1021/ja01865a059.
- ^ "Magnesium Chromate". American Elements. Archived from the original on 2013-07-22. Retrieved 2013-07-16.
- ^ Li, Su Ping; Jia, Xiao Lin; Qi, Ya Fang (2011). "Synthesis of Nano-Crystalline Magnesium Chromate Spinel by Citrate Sol-Gel Method". Advanced Materials Research. 284–286: 730. doi:10.4028/www.scientific.net/AMR.284-286.730. S2CID 137408833.
- ^ "Magnesium chromate hydrate, 99.8% (metals basis)". Us.vwr.com. Retrieved 2013-07-16.
- ^ "Item # MG-401, Heavy Magnesium Chromate Powder On Atlantic Equipment Engineers, A Division Of Micron Metals, Inc". Metal-powders-compounds.micronmetals.com. Retrieved 2013-07-16.
- ^ Fortes, A. Dominic; Wood, Ian G. (March 2012). "X-ray powder diffraction analysis of a new magnesium chromate hydrate, MgCrO4·11H2O". Powder Diffraction. 27 (1): 8–11. Bibcode:2012PDiff..27....8F. doi:10.1017/S088571561200005X. S2CID 101802113.
- ^ "Magnesium chromate hydrate | CAS 23371-94-0 | Santa Cruz Biotech". Santa Cruz Biotechnology, Inc. Retrieved 2013-07-16.
- ^ "Material Data Sheet" (PDF). McGean-Rohco, Inc. Archived from the original (PDF) on 2013-07-09. Retrieved 2013-07-16.