Ideal for slime production

Borax, also known as sodium borate, sodium tetraborate, or disodium tetraborate, is an important boron compound, a mineral, and a salt of boric acid. Powdered borax is white, consisting of soft colorless crystals that dissolve in water.

The term borax is often used for a number of closely related minerals or chemical compounds that differ in their crystal water content, like: sodium tetraborate decahydrate, Na2B4O7·10H2O.