Chrome alum

chemical compound
Chrome alum

Chrome alum, also known as chromium potassium sulfate, is a chemical compound. Its chemical formula is KCr(SO4)2. It contains chromium, potassium, and sulfate ions. The chromium is in its +3 oxidation state.

PropertiesEdit

It is a dark purple solid. It is normally attached to extra water molecules. It dissolves in water.

PreparationEdit

It is made by reducing potassium dichromate with sulfur dioxide.

UsesEdit

It was used in making leather; now chromium(III) sulfate is used instead.

Related pagesEdit