| 释义 |
platinous, a. Chem.|ˈplætɪnəs|
[f. platin-um + -ous c.]
Applied to those compounds of platinum in which it exists in its lower degree of valency, i.e. as a dyad. Opposed to platinic.
1842[see platinic]. 1858Mayne Expos. Lex., Berzelius terms Oxydum platinosum the first degree of oxidation of platina; Sulphur platinosum the first degree of sulphuration; Sales platinosi the combinations of platinous oxide with the oxacids. 1866Watts Dict. Chem. IV. 667 Dichloride of Platinum or Platinous Chloride, PtCl2. Ibid. 671 Platinous Oxide is obtained as a hydrate, Pt{pp}O.H2O or Pt{pp}H2O2, by digesting platinous chloride in a warm solution of potash and washing the precipitate. 1890Abney Photogr. (ed. 6) 171 A platinous salt..was mixed with a ferric oxalate. |