Chrome alum facts for kids

Kids Encyclopedia Facts
Chromium(III) Potassium Sulfate-crystals
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.

Properties

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

Preparation

It is made by reducing potassium dichromate with sulfur dioxide.

Uses

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

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Chrome alum Facts for Kids. Kiddle Encyclopedia.