Pertechnetic acid
| Structural formula | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||
| General | |||||||||||||
| Surname | Pertechnetic acid | ||||||||||||
| Molecular formula | HTcO 4 | ||||||||||||
| Brief description |
pink solution or dark red crystals |
||||||||||||
| External identifiers / databases | |||||||||||||
|
|||||||||||||
| properties | |||||||||||||
| Molar mass | 162.89 g mol −1 | ||||||||||||
| Physical state |
liquid |
||||||||||||
| pK s value |
0.32 (25 ° C) |
||||||||||||
| Hazard and safety information | |||||||||||||
 Radioactive |
|||||||||||||
|
|||||||||||||
| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | |||||||||||||
Pertechnetic acid is an oxy acid of technetium . The technetium here has the oxidation state +7.
Extraction and presentation
The pertechnetic acid can be produced by introducing technetium (VII) oxide into water .
properties
The pertechnetic acid has a dissociation constant of 2.09 ± 0.18 at 25 ° C. The salts of pertechnetic acid , the pertechnetates , are more soluble in water than the perrhenates .
Individual evidence
- ↑ a b Nuclear and Radiation Chemistry . Krishna Prakashan Media, ISBN 81-85842-63-9 , pp. 140 .
- ↑ a b Klaus Schwochau: Technetium: Chemistry and Radiopharmaceutical Application . John Wiley & Sons, 2008, ISBN 3-527-61337-4 , pp. 127 .
- ↑ a b T. Omori, K. Asahina, H. Suganuma: Mechanism of the solvent extraction of pertechnetate with tetraphenylarsonium chloride . In: Journal of Radioanalytical and Nuclear Chemistry . March 1995, p. 99-104 , doi : 10.1007 / BF02035989 .
- ↑ The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.