arsenious acid

arsenious acid
Arsenic Ar"se*nic ([aum]r"s[-e]*n[i^]k; 277), n. [L. arsenicum, Gr. 'arseniko`n, 'arreniko`n, yellow orpiment, perh. fr. 'arseniko`s or better Attic 'arreniko`s masculine, 'a`rrhn male, on account of its strength, or fr. Per. zern[=i]kh: cf. F. arsenic.] 1. (Chem.) One of the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. It is of a steel-gray color and brilliant luster, though usually dull from tarnish. It is very brittle, and sublimes at 356[deg] Fahrenheit. It is sometimes found native, but usually combined with silver, cobalt, nickel, iron, antimony, or sulphur. Orpiment and realgar are two of its sulphur compounds, the first of which is the true arsenicum of the ancients. The element and its compounds are active poisons. Specific gravity from 5.7 to 5.9. Atomic weight 75. Symbol As. [1913 Webster]

2. (Com.) Arsenious oxide or arsenious anhydride; -- called also {arsenious acid}, {white arsenic}, and {ratsbane}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • arsenious acid — n ARSENIC TRIOXIDE also any of several acids derived from arsenic trioxide …   Medical dictionary

  • arsenious acid — noun 1. : an acid (as ortho arsenious acid H3AsO3) derived from arsenic trioxide known only in solution and especially in the form of salts (as sodium arsenite) 2. : arsenic trioxide * * * arsenious acid, any of three hypothetical acids of… …   Useful english dictionary

  • Arsenious — Ar*se ni*ous, a. [Cf. F. ars[ e]nieux.] 1. Pertaining to, consisting of, or containing, arsenic; as, arsenious powder or glass. [1913 Webster] 2. (Chem.) Pertaining to, or derived from, arsenic, when having an equivalence next lower than the… …   The Collaborative International Dictionary of English

  • arsenious oxide — Arsenic, rat s bane, white arsenic, white oxide of arsenic, arsenious acid (a common but incorrect name) …   New dictionary of synonyms

  • arsenious oxide — arseno(III) oksidas statusas T sritis chemija formulė As₂O₃ atitikmenys: angl. arsenic trioxide; arsenic(III) oxide; arsenious oxide; arsenous acid anhydride; arsenous oxide; white arsenic rus. белый мышьяк; мышьяка пятиокись; мышьяка… …   Chemijos terminų aiškinamasis žodynas

  • Arsenous acid — Arsenous acid, also known as arsenious acid, is the hydrolyzed form of arsenic trioxide and has the formula As(OH)3. As(OH)3 occurs in aqueous solutions and has not been isolated as a pure material, although this fact does not detract from the… …   Wikipedia

  • Phenylarsonic acid — Chembox new ImageFile = PhAsO3H2.png ImageSize = 100px IUPACName = Phenylarsonic acid OtherNames = Benzenearsonic acid PAA Section1 = Chembox Identifiers CASNo = 98 05 5 PubChem = SMILES = Section2 = Chembox Properties Formula = C6H7AsO3… …   Wikipedia

  • arsenous acid — n. a toxic white powder, As2O3, used to make other arsenic compounds, insecticides, and preservatives; white arsenic: also called arsenic trioxide or arsenious acid …   English World dictionary

  • thioarsenious acid — [thī΄ōär sē′nē əs] n. 〚 THIO + ARSENIOUS〛 any of a group of hypothetical acids, H3AsS3, HAsS2, and H4As2S5, known only in the forms of their salts * * * …   Universalium

  • arsenous acid anhydride — arseno(III) oksidas statusas T sritis chemija formulė As₂O₃ atitikmenys: angl. arsenic trioxide; arsenic(III) oxide; arsenious oxide; arsenous acid anhydride; arsenous oxide; white arsenic rus. белый мышьяк; мышьяка пятиокись; мышьяка… …   Chemijos terminų aiškinamasis žodynas

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