<P> The ferric chloride test is used to determine the presence of phenols in a given sample or compound ( for instance natural phenols in a plant extract ) . Enols , hydroxamic acids , oximes , and sulfinic acids give positive results as well . The bromine test is useful to confirm the result , although modern spectroscopic techniques ( e.g. NMR and IR spectroscopy ) are far superior in determining the identity of the unknown . The quantity of total phenols may be spectroscopically determined by the Folin - Ciocalteau assay . </P>
<P> The ferric chloride test is used to determine the presence of phenols in a given sample or compound ( for instance natural phenols in a plant extract ) . Enols , hydroxamic acids , oximes , and sulfinic acids give positive results as well . The bromine test is useful to confirm the result , although modern spectroscopic techniques ( e.g. NMR and IR spectroscopy ) are far superior in determining the identity of the unknown . The quantity of total phenols may be spectroscopically determined by the Folin - Ciocalteau assay . </P>
what is the purpose of the fecl3 test
what is the purpose of the fecl3 test
to determine the presence of phenols in a given sample or compound
to determine the presence of phenols in a given sample or compound