Misplaced Pages

Magnesium chromate

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Magnesium chromate
Names
Other names Magnesium chromate(VI)
Magnesium monochromate
Magnesium monochromate(VI)
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.204 Edit this at Wikidata
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/Cr.Mg.4O/q;+2;;;2*-1Key: CRGGPIWCSGOBDN-UHFFFAOYSA-N
  • InChI=1/Cr.Mg.4O/q;+2;;;2*-1/rCrO4.Mg/c2-1(3,4)5;/q-2;+2Key: CRGGPIWCSGOBDN-OVNOGNLDAB
SMILES
  • (=O)(=O).
Properties
Chemical formula MgCrO4
Molar mass 140.297 g·mol
Appearance Yellow solid
Solubility in water soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

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.

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.

Uses

It is available commercially in a variety of powders, from nanoscale to micron-sized, either as an anhydrous or hydrated form.

As a hydrate, it is useful as a corrosion inhibitor and pigment, or as an ingredient in cosmetics. In 2011, an undecahydrate (containing 11 molecules of water) of this compound was discovered by scientists at the University College London.

Hazards

Magnesium chromate hydrate should be stored at room temperature, and there is no current therapeutic use. 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.

References

  1. 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.
  2. "Magnesium Chromate". American Elements. Archived from the original on 2013-07-22. Retrieved 2013-07-16.
  3. 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.
  4. "Magnesium chromate hydrate, 99.8% (metals basis)". Us.vwr.com. Retrieved 2013-07-16.
  5. "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.
  6. 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.
  7. "Magnesium chromate hydrate | CAS 23371-94-0 | Santa Cruz Biotech". Santa Cruz Biotechnology, Inc. Retrieved 2013-07-16.
  8. "Material Data Sheet" (PDF). McGean-Rohco, Inc. Archived from the original (PDF) on 2013-07-09. Retrieved 2013-07-16.
Magnesium compounds
Chromates and dichromates
Chromates
Chlorochromates
Chromate esters
Dichromates
Related
Categories: