tungstic acid

American  

noun

Chemistry.

1. a hydrate of tungsten trioxide, H 2 WO 4 ⋅H 2 O, used in the manufacture of tungsten-lamp filaments.

2. any of a group of acids derived from tungsten by the addition of acid to a soluble tungstate or to a mixture of a tungstate and a silicate, phosphate, etc.

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tungstic acid British  

noun

1. any of various oxyacids of tungsten obtained by neutralizing alkaline solutions of tungstates. They are often polymeric substances, typical examples being H 2 WO 4 ( orthotungstic acid ), H 2 W 4 O 13 ( metatungstic acid ), and H 10 W 12 O 14 ( paratungstic acid )

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Etymology

Origin of tungstic acid

First recorded in 1790–1800

Example Sentences

“Now,” he said, when the tungstic acid had been dissolved, and he had dropped a small bar of tin into the solution.

From Project Gutenberg

It consists of silica with the tungstic acid.

From Project Gutenberg

Coolidge succeeded in accomplishing the feat in 1912 by reducing the tungstic acid by hydrogen and molding the metallic powder into a bar by pressure.

From Project Gutenberg

An additional amount of the acid renders it violet, and a still larger quantity affords a beautiful pure blue color, similar to that produced by tungstic acid.

From Project Gutenberg

Next followed the discovery of tungstic acid, and in 1783 he added to his list of useful discoveries that of glycerine.

From Project Gutenberg