| 单词 |
pertechnetic |
| 释义 |
pertechnetic, a. Chem.|ˌpɜːtɛkˈniːtɪk| Also -technic |-ˈtɛknɪk|. [f. per-1 5 b + technetium n. + -ic1.] pertechnetic acid, the acid HTcO4 , produced by dissolving technetium in bromine water.
1952Jrnl. Amer. Chem. Soc. LXXIV. 557/1 It appears..that the dark red crystals formed on evaporating aqueous solutions of Tc2O7 correspond to Tc2O7.H2O , or to anhydrous pertechnic acid, HTcO4 . 1962Q. Rev. Chem. Soc. XVI. 307 Pertechnetic acid is a strong acid, and, like perrhenic acid it can be titrated by using indicators such as methyl red. 1984Greenwood & Earnshaw Chem. of Elements (1986) xxiv. 1215 The metals dissolve readily in oxidizing acids such as HNO3 and conc[entrated] H2SO4 and also in bromine water, when ‘pertechnetic’ and ‘perrhenic’ acids ( HMO4 ) are formed. |

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