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Is there a way to test if tequila has oxidised and if so the level of oxidisation? It would be best if this could be done without a control sample, but the most important thing is if I can do this with 'household' equipment - although I do have access to a hydrometer.

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  • $\begingroup$ Welcome to Chemistry.SE! Take the tour to get familiar with this site. Mathematical expressions and equations can be formatted using $\LaTeX$ syntax. If you receive useful answers, consider accepting one. Can I assume you want to know the percentage of ethanol oxidised to acetic acid? I would assume, that this might be a bit complicated with household items. Tequila itself is a wild mixture of compounds, accurate determination of all compounds is a challenge itself. $\endgroup$ Commented Aug 25, 2015 at 10:34
  • $\begingroup$ I guess, checking the taste isn't good enough for you? ;) $\endgroup$
    – Mithoron
    Commented Aug 25, 2015 at 11:59
  • $\begingroup$ @Martin-マーチン "percentage of ethanol oxidised to acetic acid" sounds like the kind of thing we're looking for. $\endgroup$
    – Aligma
    Commented Aug 25, 2015 at 12:27
  • $\begingroup$ @Mithoron it's the taste that's made us want to conduct these tests - it was a brand new bottle but seems a little different to the expected taste $\endgroup$
    – Aligma
    Commented Aug 25, 2015 at 12:27
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    $\begingroup$ To my knowledge tequila and other high percent stuff doesn't have problem with turning alcohol into acid, as acetic fermentation can't proceed in solutions with high ethanol content $\endgroup$
    – Mithoron
    Commented Aug 25, 2015 at 12:32

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