| 释义 |
ferric, a.|ˈfɛrɪk|
[f. L. ferr-um iron + -ic. Cf. F. ferrique.]
1. Of, pertaining to, or extracted from iron.
1799Sir H. Davy in Beddoes Contrib. to Phys. & Med. Knowl. (1799) 184 The argentic and ferric phosoxyds. 1852Joubert in Jrnl. Soc. Arts 26 Nov., A ferric solution should be employed. 1885S. Tromholt Aurora Borealis I. 285 The Aurora Borealis should be produced by the earth's entering into clouds of ferric dust.
2. Chem. applied to compounds in which iron exists in its higher degree of valency, as ferric acid, a hypothetical acid H2FeO, assumed to exist in the salts called ferrates; ferric bromide FeBr3; ferric chloride FeCl3; ferric fluoride FeF3; ferric oxide Fe2O3; ferric sulphide Fe2S3. Also ferric state: see quot. 1881.
1853W. Gregory Inorg. Chem. (ed. 3) 214 Ferric Acid..corresponding to manganic acid, is also unknown in the separate state. 1881Times Jan. 3/6 The metal [iron] itself when in the ferric state, or state of highest combining power. 1882Geikie Text-bk. Geol. ii. ii. §6. 174 Precipitates, consisting..partly of the hydrated ferric oxide. |