| 单词 | phosphorous acid |
| 释义 | > as lemmasphosphorous acid phosphorous acid n. Chemistry an oxyacid containing trivalent phosphorus; (usually) spec. a colourless, crystalline, dibasic acid, HPO(OH)2 (cf. phosphonic acid n. at phosphonic adj. Compounds). ΚΠ 1788Phosphorous acid [see sense 2]. 1922 T. M. Lowry Inorg. Chem. xxvii. 430 Phosphorous acid..forms phosphites of the type M3PO3, but usually only two of the three hydrogen atoms are replaced by metals. 1939 Osiris 7 230 Alexandr Porfiryevich's first work was a comparative study of the arsenious and phosphorous acids from the chemical and toxicological points of view. 1988 F. A. Cotton & G. Wilkinson Adv. Inorg. Chem. (ed. 5) xi. 401 It may be noted..that phosphorous acid itself, and all trivalent phosphorus acids generally, are thermally unstable. < as lemmas |
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