Imidosulphonates. 



by 



Edward Divers, M.D., F.R.S., Prof., 



and 



Tamemasa Haga, F.C.S., Asst. Prof. 



Imperial University. 



This paper is based upon an investigation of the s(^diiim imidosul- 

 phonates and their derivatives, all hitherto unknown, but includes, 

 besides, some new things about the ammonium and potassium salts. 

 Several mixed tribasic salts are described in it, particularly those of 

 lead, of silver, and of mercury, which show peculiarities in their 

 constitution. It also contains the determination by experiment of the 

 nature of sulphatammon (Rose), a compound of one molecule of 

 sulphur trioxide with two of ammonia. 



Histonj.—noHe (1834-1840 ; !>/.(/., 32, 81; 47, 471 ; 49, 1S3), 

 Jacquelain (1843: Ann. Cliim. Phys., [3] 8, 293), Fremy (1845; Ann. 

 Chim. Phjis. [3] 15, 408), Woronin (1859; J. Buss. Ch. Soc. 3, 273), 

 Claus and Koch (1869; Ann. Chem., 152, 336), Berglund (1875; /.. 

 miiv. Arsk, 12 and 13; null. Soc. Ch., 25, 455; 29, 422; Ber. Ch. Ges., 

 9, 252 and 1896), Rascln'g (1887 ; Ami. Chem., 241, 161), and Mente 

 (1888; Ann. Chem., 248, 232) are the chemists who have worked 

 upon the inorganic salts now known as imidosulphonates.* The 

 constitution of these s.alts luis been established mainly through in- 

 vestigations by Rose, Jacquelain, and Berglund. 



* Woronin's paper we only know from abstracts in the Jahreshericht and Watts's Dictionary. 

 Berglund's memoir in the TAind:^ iiniirrsitäts Ar>i]irift we have also not seen. 



