Question

What is Hinsberg reagent?

Answer 1

Hinsberg’s reagent

Hinsberg’s reagent is benzene sulphonyl chloride $\left(C_6{H}_{5}S{O}_{2}Cl\right).$



Characteristics of Hinsberg Reagent

Hinsberg reagent is used for the distinction of primary, secondary and tertiary amines and also for the separation of a mixture of amines.

Hinsberg reagent reacts with primary amines to form N-alkylbenzene sulphonamides which is soluble in alkali.

Hinsberg reagent reacts with secondary amines to form $N,N-\text{dialkylbenzene sulphonamides}$ which is insoluble in alkali.

Tertiary amines do not react with benzene sulphonyl chloride.