arsenic trioxide

American  

noun

Chemistry.

1. a white, tasteless, amorphous, slightly water-soluble, poisonous powder, As 2 O 3 , used chiefly in the manufacture of pigments and glass and as an insecticide or weed-killer; arsenous acid.

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arsenic trioxide British  

noun

1. Also called: arsenic.  a white poisonous powder used in the manufacture of glass and as an insecticide, rat poison, and weedkiller. Formula: As 2 O 3

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Example Sentences

In the form of arsenic trioxide, it can be used to treat acute promyelocytic leukemia, the book says.

From Washington Post • Jun. 10, 2013

Arsenic trichloride, when mixed with enough water, breaks down into arsenic trioxide and hydrochloric acid in a chemical reaction that increases its corrosive properties.

From Time Magazine Archive

Into the end of one of the ignition tubes thus formed, when it is cool, put one-fourth of a gram of arsenic trioxide, As2O3, using paper to transfer it.

From An Introduction to Chemical Science by Williams, Rufus Phillips

It is easily oxidized by heating with concentrated nitric acid to arsenic acid, and with concentrated sulphuric acid to arsenic trioxide; dilute nitric acid only oxidizes it to arsenious acid.

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

Oxidation may be effected by the addition to the glass mixture of a substance which gives up oxygen at a high temperature, such as manganese dioxide or arsenic trioxide.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" by Various