Arsenic trioxide

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.
a white poisonous powder used in the manufacture of glass and as an insecticide, rat poison, and weedkiller. Formula: As2O3 Also called arsenic


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    a grayish-white element having a metallic luster, vaporizing when heated, and forming poisonous compounds. Symbol: As; atomic weight: 74.92; atomic number: 33. . a mineral, the native element, occurring in white or gray masses. of or containing arsenic, especially in the pentavalent state. Contemporary Examples arsenic has been used as a poisoning agent since the […]

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    containing or relating to . any of a group of pesticides, drugs, or other compounds containing . Historical Examples arsenical Soaps, &c.—Arsenic is used in preserving the skins of animals. Poisons: Their Effects and Detection Alexander Wynter Blyth arsenical compounds have supplanted practically all other substances used to combat external biting insects. Apple Growing M. […]

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    arsenicalism arsenicalism ar·sen·i·cal·ism (är-sěn’ĭ-kə-lĭz’əm) n. See arseniasis.

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