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  3. Chemistry
  4. Primary, secondary and tertiary amines can be distinguished by

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Q. Primary, secondary and tertiary amines can be distinguished by

AFMCAFMC 2010Amines

Solution:

Hinsberg's reagent (benzene sulphonyl chloride) is used to distinguish $1^{\circ}, 2^{\circ}$ and $3^{\circ}$ amines. With Hinsberg's reagent, $1^{\circ}$ amines give a sulphonamide, soluble in alkali, $2^{\circ}$ amines form a sulphonamide, insoluble in alkali, while $3^{\circ}$ amines do not react at all.