18 ART. 14. T. SUZUKI : THE OXIMES AND 



accounted for by the solubility of this gas in the liquid and 

 also by the incompleteness of the reaction under the conditions 

 of the foregoing experiment. 



When the ammoniacal liquid, in which the brisk reaction 

 had taken place, was evaporated on a water-bath, small gas 

 bubbles continued to appear until the liquid attained a syrupy 

 consistency. On cooling, beautifLil star-like clusters of pure am- 

 monium m-benzenedisulphinate, consisting of elongated tetrahedra, 

 separated out. This salt melts at 113°-115°, and the melting 

 point was not altered by repeated crystallisation from water. 

 There was nothing which indicated the presence of any other 

 reaction products. 



This method of changing a crude alkaline disulphonate into 

 the oxime and then decomposing it by ammonia may be em- 

 ployed for the preparation of tlie pure disulphinate, in large 

 quantities, which may, otherwise, be very difficult to obtain. 



Ammonium p-benzenedisulphinate was obtained in the same 

 way from the corresponding oxime. This substance crystallises 

 in fine needles, and decomposes without melting at about 200°. 



Benzene -monosulphoxime also yielded the ammonium salt 

 of benzenemonosulphinic acid in good quantity. 



Ä7ialytical data. 

 Ammonium m-benzenedisulphinate. 



a) Nitrogen. 



0.1421 gr. gave 13.1 c.c. of moist nitrogen at 14° and 763 m.ra. 



Nitrogen found 10.8 <^ 



Calculated for C„H, (SO, NH,),, H„ 10.9 „ 



I 



