Anhydrous

Liquids and solids (powders) are anhydrous if they are without water, i.e., dry. They are sold as anhydrous when they have been processed to remove water from the end product.

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A hydrate is referred to as anhydrous if the water is eliminated from its structure.

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Liquid: A liquid (a phase of matter) is a fluid whose volume is fixed under conditions of constant temperature and pressure; and, whose shape is usually determined by the container it fills. Furthermore, liquids exert pressure on the sides of a container as well as on anything within the liquid itself; this...

Solid: A solid is a phase of matter characterized by resistance to deformation and to changes of volume....

Powder: Powder is a substance that has been crushed into very fine grains. Several powders are frequently referred to simply as "powder", including:...