of certain Sulphomethylates. 



43 



in the second column another series is given of salts decom- 

 posable by ebullition of their aqueous solutions, with separation 

 of sulphate of baryta, and formation (in aiost cases) of new acids, 

 and in which the proportion of sulphur to oxygen is as 2 to 8 : 

 the observations were made in all cases with baryta salts j where 

 an asterisk is prefixed, the experiment was either made for the 

 first time or repeated by myself. 



II. 



*CnPBa3S04. 



(Sulpliomethylate of baryta.) 



t^CMiSBaSSO^. 



(Sulphfctliyiate of baryta.) 



§C6IFBa2SO'i. 



(Sulphopropylate of baryta.) 



*CioHiiBa3S04. 



(Sulphamylate of baryta.) 



*Ci2H5Ba2S04. 



(Sulphopbeuate of baryta.) 



*C'4H^Ba2SO'*. 

 (Sulphotoluenylate of baryta.) 



I. 



*C2H3Ba2S03. 



(Hyposulphomethylate of baryta.) 



*C'2H-5Ba2S03. 

 (Sulphobenzolatc of baryta.) 



*C"»H7Ba2S03. 



(Sulphotoluolate of baryta.) 



*C'« H9 Ba 2S03. 

 (Sulphoxylolate of baryta.) 



tCi8H"Ba2S03. 

 (Sulpbocumolate of baryta.) 



|*C20Hi3Ba2S03. 

 (Sulphocymolate of baryta.) 



*C20H7Ba2SO3. 

 (Sulphonaphthalate of bar3'ta.) 



The experiment might no doubt have been tried with many 

 other salts of similar constitution with analogous results. 



In column 11. , by the ebullition of solutions of the salts 1 and 

 2, modified stable salts may be obtained ; a similar action pro- 

 bably takes place with salts 3 and 4, for the solution of ordinary 

 sulphamylate of baryta gives a blue -gray precipitate with proto- 

 nitrate of mercury, while the salt obtained by boiling, &c. the 

 solution of sulphamylate of baryta gives a white precipitate. 

 The metamorphosis of sulphamylate of baryta takes place readily 

 on heating in an oil-bath the solution of this salt enclosed in a 

 sealed tube ; with sulphophenate of baryta under similar con- 

 ditions, regeneration of phenylic alcohol takes place : 



C»^H5Ba2SOH2HO = C'2II6 02 + BaS04 + HSO'*. 



The relations of jcthyle, &c. to phenyle are very remarkable. 

 The consideration of these analogies is likely to lead to many 

 interesting results ; for instance, phenate of ammonia, when 

 heated in a closed tube, is well known to be resolved into aniline 

 and water, and I have found that an exactly analogous reaction 



t (ierhardt ami Cahoius, J)elalande. % Gerbardt. § Berthelot. 



