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.

---

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 )

---

Etymology

Origin of tungstic acid

First recorded in 1790–1800

Example Sentences

See Examples For:

tungstic acid

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

From Shadow Mountain by Coolidge, Dane

If the tungstic acid contain iron, the glass becomes blood-red on cooling, similar to titanic acid.

From A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations by Anonymous

By weighing the sample first and extracting the tungsten we get the percentage, when it’s been filtered and dried and weighed again, of the tungstic acid in the ore.

From Shadow Mountain by Coolidge, Dane

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 Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries by Slosson, Edwin E.

Any silica present will be left undissolved; it should be separated and weighed, and its weight deducted from that of the tungstic acid found.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius