मराठी
Karnataka Board PUCPUC Science 2nd PUC Class 12

Identification of Primary, Secondary and Tertiary Amines

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Estimated time: 4 minutes
CBSE: Class 12

Key Points: Identification of 1°, 2°, 3° Amines

S. No. Test 1° amine 2° amine 3° amine
1. Reaction with nitrous acid Give alcohol with effervescence of N₂ gas Gives oily nitroso-amine which gives Liebermann’s nitroso amine test In the cold, it forms nitrite, which is soluble in water and, upon heating, yields nitrosoamine
2. Hinsberg’s reagent Gives N-alkyl benzene sulphonamide soluble in alkali Gives N, N-dialkyl benzene sulphonamide insoluble in alkali No reaction
3. Carbylamine test Forms isocyanide with pungent odour No reaction No reaction
4. Hofmann’s mustard oil reaction Forms isothio cyanate having smell of mustard oil No reaction No reaction
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