Chemical Tests
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The chemical tests are performed from neutral or slightly acidic solution of drug.
CHEMICAL TESTS
The chemical tests are performed from neutral or slightly
acidic solution of drug.
Dragendorff’s Test
Drug solution + Dragendroff’s reagent (Potassium Bismuth
Iodide), formation of Orangish red colour.
Mayer’s Test
Drug solution + few drops of Mayer’s reagent (potassium
mercuric iodide), formation of creamy-white precipitant.
Hager’s Test
Drug solution + few drops of Hagers reagent (Saturated aq. Solution
of Picric acid), formation of crystalline yellow precipitate.
Wagner’s Test
Drug solution + few drops of Wagner’s reagent (dilute Iodine
solution), formulation of reddish-brown precipitate.
Tannic Acid Test
Drug solution + few drops of tannic acid solution,
formation of buff coloured precipitate.
Ammonia Reineckate Test
Drug solution + slightly acidified (HCl) saturated solution
of ammonia reineckate, formation of pink flocculent precipitate.
