Which Compounds Give Fecl3 Test?

Ferric Chloride Test
Compounds such as enols, hydroxamic acids
hydroxamic acids
A hydroxamic acid is a class of organic compounds bearing the functional group RC(O)N(OH)R', with R and R' as organic residues and CO as a carbonyl group. They are amides (RC(O)NHR') wherein the NH center has an OH substitution. They are often used as metal chelators.
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, sulfinic acids, and oximes
give positive results.

Which functional group gives a positive test with FeCl3?

Compounds with a phenol group will form a blue, violet, purple, green, or red-brown color upon addition of aqueous ferric chloride. This reaction can be used as a test for phenol groups.

Which type of compounds give FeCl3 test?

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.

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