anhydrous

Anhydrous, an-hī′drus, adj. a term applied to a chemical substance free from water.

Even in this state, soda contains 23 per cent of water, and only 77 per cent of pure anhydrous soda.

The anhydrous hydrogen peroxide obtained by Wolffenstein boils at 84-85C.

The re-crystallised and pure salt is used for preparing the anhydrous sulphate, which is used for detecting moisture in gases.

By exposure to a red heat the carbonic acid may be expelled, and the earth rendered anhydrous.