418 



Mr. A. H. Church on Parabenzole, 



so in diy aether. A determination of copper in the copper-salt 

 gave the following results, the copper being precipitated by pot- 

 ash and determined as oxide : — 



•482 grm. of salt gave "0995 grm. of oxide of copper. 



This corresponds to 16"51 per cent, of metallic copper, while the 

 formula C'2H5Cu2S03 requires 16-79. The salt had been 

 dried at 100° C. 



In the following Table a few of the compounds of parabenzole 

 are compared with those of benzole. The formulae of the mem- 

 bers of both series being identical, are given in the central column. 

 I may as well state in this place, that the parabenzole employed 

 in all my experiments, originally obtained by the fractional di- 

 stillation of coal-naphtha, had been submitted to a temperature 

 of —20° C. in order to separate benzole, that it had been distilled 

 off sodium, and possessed, when thus purified, a perfectly con- 

 stant boiling-point. 



Derivatives of Paraben- 

 Derivatives of Benzole. zole. 



Benzoleboilsat80°-8C. I. C'^ H^' Parabenzole boils at 



and solidifies at 0°. 97°'5, and does not soli- 



dify at —20° C. 



Siilpliobenzolieacidcry- II. 1. C^-H^2S0^ Sulphopavabenzolicacid 



stallizes magnificently in crystallizes difficultly, is 



vacuo over sulphuric acid : perhaps slightly deliques- 



is exceedingly deliques- cent, 

 cent. 



Sulphobenzolate of ba- 

 ryta crystallizes in pearly 

 scales : once deposited 

 from their aqueous solu- 

 tion, these crystals do not 

 very readily redissolve. 



Sulphobenzolate of cop- 

 per occiu's in pale, blue, 

 voluminous crystals of 

 pearly lustre, not very so- 

 luble in water : they con- 

 tain water of crystalliza- 

 tion, but are anhydrous 

 at 170°. 



Nitrobenzole boils at 

 213°. Dinitrobenzole 

 fuses at 88° and solidifies 

 at 86°. 



2, C'' H^ Ba 2S0^ Sulphoparabenzolate of 

 baryta dries up in vacuo 

 to a gummy mass, is alway s 

 exceedingly soluble, and 

 shows scarcely a trace of 

 crystalline structure. 



3. C'^^ H^ Cu 280^ The copper-salt of the 

 new acid occurs as a 

 bluish, semi-transparent, 

 amorphous mass, exces- 

 sively soluble, containing 

 no water, in fact anhy- 

 drous below 100° C. 



III. C'^H^NO'* The nitro-compounds 



TV C^^H^2N0'' tlerived from parabenzole 

 present exactly the same 

 physical characteristics as 

 those derived from ben- 

 zole. 



It would seem that in parabenzole we have an isomer of ben- 



