| triketohydrindene hydrate |
chemical name: 1,2,3-indantrione monohydrate. A compound, C9H4O3·H2O, occurring as white to brownish white crystals or crystalline powder, used as a reagent. See under tests.
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| triketohydrindene hydrate t. |
to 25 mL of water add 10 mg of aminoacetic acid. To 1 mL of this solution add a solution of 50 mg of sodium acid in 2 mL of water, then add 0.2 mL of a solution of 5 mg of triketohydrindene hydrate (Ninhydrin) in 1 mL of water. Add the suspected matter and boil for 1–2 minutes. A violet color indicates a free carboxyl and alpha-amino group in proteins, peptones, peptides, or amino acids.
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