What is Hinsberg's reagent and where Hinsberg's test use?

Hinsberg's reagent is benzene sulphonyl chloride and it use for distinguished between 1°, 2° and 3° amine .

Primary amines contains two active Hydrogen so easy react with benzene sulphonyl chloride and form a salt, which is dissolved in NaOH due to remain another active Hydrogen. Secondary amines have  only one hydrogen so it react with Benzene sulphonyl chloride but does not dissolve d in NaOH. Tertiary amines have no active Hydrogen so does not react with Benzene sulphonyl chloride.

Related Questions:

1. What is relative basic strength order 1° amines , 2°amines and 3° amines ? 
2. Explain:Arrange the following in the increasing order of their acid strength : Methyl amine, Dimethyl amine, Aniline, N-methyl aniline (I.I.T, 1988).
3. What is Carbylamine test or Isocyanide test ?
4. What is Hinsberg's reagent and where Hinsberg's test use?
5. Can we prepare aniline by Gabriel – phthalimide reaction?
6. N-Ethyl-N-methyl propanamine does not show optical activity why?
7. What is relative basic strength order 1° amines , 2°amines and 3° amines ? Explain:
8. Amines are more basic than ammonia why?
9. Give an explanation for the fact that Guanidine NH=C(CH3)2 is a stronger base than most of amines?
10. Arrange in correct order of basic Character of aniline, pyrrol, pyridine and piperidine?
11. What is correct basicity order of pyridine, pyridazine, pyrimidine and pyrazine ?
12. Give an explanation for the fact that Guanidine NH=C(CH3)2 is a stronger base than most of amines?
13. Arrange in correct order of basic Character of aniline, pyrrol, pyridine and piperidine?
14. What is correct basicity order of pyridine, pyridazine, pyrimidine and pyrazine ?
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16. Why pyrimidine is less basic than pyridine?
17. Imidazole is more basic than pyridine? Why?
18. Biological Important of Imidazole and structure:
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21. Tetrahydroquinoline amine is the stronger base than Tetrahydroisoquinoline? Why?