Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Magnesium chromate is a chemical compound, with the formula MgCrO4. It is a white or brownish, odorless, water-soluble solid with several important industrial uses. This chromate occurs naturally as a spinel, or can be manufactured as a powder.
Before 1940, the literature about Magnesium chromate and its hydrates was sparse, but studies starting in that year looked at its properties and solubility.
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.
Magnesium chromate hydrate should be stored at room temperature, and there is no current therapeutic use. It is a suspected carcinogen, and can cause acute and dermititis, and possibly kidney and liver damage if inhaled, so it should be treated as a hazardous waste.
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