Anhydride
a compound formed by removing water from a more complex compound: an oxide of a nonmetal (acid anhydride) or a metal (basic anhydride) that forms an acid or a base, respectively, when united with water.
a compound from which water has been abstracted.
Historical Examples
It is the anhydride of an acid, and consequently it dissolves in fused alkalis to form silicates.
An Elementary Study of Chemistry William McPherson
The constituents of rosin are chiefly (80-90%) abietic acid or its anhydride together with pinic and sylvic acids.
Soap-Making Manual E. G. Thomssen
Nitric peroxide, Peroxide of nitrogen, Nitrogen tetroxide, Hyponitric anhydride.
Cooley’s Practical Receipts, Volume II Arnold Cooley
As a matter of fact, reaction takes place at the boiling temperature of the anhydride.
Researches on Cellulose C. F. Cross
This gives the total acidity due to free acetic acid and acid formed from the anhydride.
Soap-Making Manual E. G. Thomssen
The most probable view is that it is the anhydride of sylvic acid, which is probably C20H30O2.
Scientific American Supplement, No. 711, August 17, 1889 Various
Antimonic or metantimonic acid, heated to a temperature below redness, loses water and yields the anhydride, Sb2O5.
Cooley’s Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades…, Sixth Edition, Volume I Arnold Cooley
Like sulphur, selenium combines with oxygen and forms an anhydride corresponding to sulphurous anhydride.
Cooley’s Practical Receipts, Volume II Arnold Cooley
As Arsenious anhydride:—Obtained in a weighed capsule or tube, either by the crystallisation or sublimation test.
Cooley’s Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades…, Sixth Edition, Volume I Arnold Cooley
noun
a compound that has been formed from another compound by dehydration
a compound that forms an acid or base when added to water
Also called acid anhydride, acyl anhydride. any organic compound containing the group -CO.O.CO- formed by removal of one water molecule from two carboxyl groups
anhydride an·hy·dride (ān-hī’drīd’)
n.
A chemical compound formed from another by the removal of water.
anhydride
(ān-hī’drīd’)
A chemical compound formed from another, especially an acid, by the removal of water.
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a combining form representing anhydride, in compound words: anhydroglucose. anhydro- pref. Without water: anhydride.
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with all water removed, especially water of crystallization. Historical Examples Above this temperature the anhydrous salt is the stable solid phase. The Phase Rule and Its Applications Alexander Findlay When perfectly pure and anhydrous, it forms a white and highly crystalline mass, rapidly decomposed by air and moisture. Cooley’s Cyclopdia of Practical Receipts and Collateral […]
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