arsenic acid

American  

noun

Chemistry.

1. a white, crystalline, water-soluble powder, H 3 AsO 4 ⋅½H 2 O, used chiefly in the manufacture of arsenates.

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arsenic acid British  

noun

1. a white poisonous soluble crystalline solid used in the manufacture of arsenates and insecticides. Formula: H 3 AsO 4

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Etymology

Origin of arsenic acid

First recorded in 1795–1805

Example Sentences

A salt having two equivalents of arsenic acid to one of the base.

From Webster's Unabridged Dictionary (2nd 100 Pages) by Webster, Noah

It is applicable in all cases where the arsenic exists in solution as arsenic acid or as arsenate of soda.

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

It was first made from aniline by the agency of mercurial salts, and afterward by that form of arsenic known to chemists as arsenic acid.

From Scientific American Supplement, No. 470, January 3, 1885 by Various

This substance dissolves slowly in water, forming arsenic acid; by heating to redness it decomposes into arsenic and oxygen.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" by Various

Having got the arsenic into solution as arsenic acid, and in a volume not much exceeding 50 c.c., add about 20 c.c. of dilute ammonia and 20 c.c. of "magnesia mixture."

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