water of hydration

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water of hydration

n. pl. waters of hydration

Water chemically combined with a substance in such a way that it can be removed, as by heating, without substantially changing the chemical composition of the substance.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Noun

water of hydration - the water present in hydrated compounds

water of crystallisation, water of crystallization

H2O, water - binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent

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The zinc borate alternately reduces the amount of smoke generated by increasing char and giving off water of hydration to quench the flame.

Synergistic additives for flame retardant elastomers

ACM-MH 95 magnesium hydroxide serves as a flame-retardant filler, releasing water of hydration like alumina trihydrate, but is able to withstand processing temperatures to 625 F vs.