decahydrate

[ dek-uh-hahy-drit, -dreyt ]

noun

, Chemistry.

1. a hydrate that contains ten molecules of water, as washing soda, Na 2 CO 3 ⋅10H 2 O.

Other Words From

• deca·hydrat·ed adjective

Word History and Origins

Origin of decahydrate¹

First recorded in 1900–05; deca- + hydrate

Example Sentences

Borax, or sodium borate decahydrate, is a salt made of a combination of boron, sodium, oxygen and hydrogen.

From Salon

The inner box contained a can full of the chemical sodium sulfate decahydrate, which rested on top of the glass tubes and kept the cells from overheating.

From Scientific American

Its maximum solubility in water is at 34�; above that temperature it ceases to exist in the solution as a decahydrate, but changes to the anhydrous salt, the solubility of which decreases with rise of temperature.

From Project Gutenberg

The pentahydrate is deposited between 79� C. and 56� C.; below this temperature the decahydrate or ordinary borax, Na2B4O7�10H2O, is deposited.

From Project Gutenberg