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Question
How will you distinguish between primary secondary and tertiary aliphatic amines?
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Solution
| S. No. | Reagents | 1° amine | 2° amine | 3° amine |
| (i) | Nitrous acid | Primary forms alcohols | Secondary forms N-nitroso amine | forms salt |
| (ii) | Chloroform and KOH | with CHCI3/KOH forms carbylamine | No reaction | No reaction |
| (iii) | Acetyl chloride | with CH3COCI forms N-alkyl acetamide | It forms N, N-dialkyl acetamide | No reaction |
| (iv) | Carbon disulphide and HgCl2 | with CS2 and HgCl2 alkyl isothiocyanate is formed. | No reaction | No reaction |
| (v) | Alkyl halide | with three moles of alkyl halide quaternary ammonium salt is formed. | with two moles of alkyl halide quarternary ammonium salt is formed. | with one mole of alkyl halide quarternary ammonium salt is formed. |
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