| 单词 | arsenious acid |
| 释义 | > as lemmasarsenious acid arsenious acid n. [after French acide arsénieux (1792 in the passage translated in quot. 1795)] now rare a weak acid, H3AsO3, formed when arsenic trioxide dissolves in water (= arsenous acid n. at arsenous adj.); (also) this oxide, As2O3: see arsenic trioxide n. at arsenic n. Compounds 2. ΚΠ 1795 tr. A.-F. Fourcroy Philos. Chem. vii. 84 Oxyd of arsenic, being also capable of uniting with these bases, may be considered as a sort of arsenious acid [Fr. acide arsénieux]. 1818 F. Accum Pract. Ess. Chem. Re-agents (ed. 2) 145 Two or three grains of arsenious acid. 1848 R. D. Thomson School Chem. iv. 98 This compound of oxygen and arsenic is termed arsenious acid (AsO3) or flowers of arsenic. 1938 R. Hum Chem. for Engin. Students xxiv. 674 When ferric hydroxide is used as an antidote, in arsenic poisoning, it acts by precipitating an insoluble ferric arsenite from the arsenious acid or other arsenic solution in the body. 2003 J. Flanders Victorian House (2004) v. 153 Green papers were particularly dangerous, often having an arsenic base..; some wallpapers had as much as 59 per cent of arsenious acid in the paper. < as lemmas |
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