Trifluoroacetate counterion: difference between revisions
Diff·revision 3 → 4·22:34, 8 Oct 2024
Difference between revision 3 and revision 4 of Trifluoroacetate counterion. 2 lines changed; the page grew by 272 bytes.
| Revision 3 — 21:39, 1 Oct 2024 DiluentDiya (talk) correct the integration description — valley-to-valley, not drop-line 2,098 bytes ±0 | Revision 4 — 22:34, 8 Oct 2024 LurkerLevi (talk) add the detection wavelength 2,370 bytes +272 | ||
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| 16 | Removal requires salt exchange, most often by repeated lyophilisation from dilute hydrochloric or acetic acid, or by an ion-exchange step. Exchange is not free: it costs a processing step and some yield, and the resulting acetate or hydrochloride salt has its own mass contribution. | 16 | Removal requires salt exchange, most often by repeated lyophilisation from dilute hydrochloric or acetic acid, or by an ion-exchange step. Exchange is not free: it costs a processing step and some yield, and the resulting acetate or hydrochloride salt has its own mass contribution. |
| 17 | 17 | ||
| + | 18 | Complete removal is difficult, and residual trifluoroacetate persists at low levels even after exchange. A certificate reporting an acetate salt should therefore also report residual trifluoroacetate if the exchange is to be evidenced rather than asserted.{{r|roux2008}} | |
| + | 19 | ||
| 18 | == References == | 20 | == References == |
| 19 | {{reflist}} | 21 | {{reflist}} |