SACCHOLACTIC ACID CONVERTED INTO SUCCtNIC. 145 



e. The saturated solution did not precipitate acetate of examination 

 lime, sulphate of manganese, nitrate of copper, acetate of J^ vanous 

 lead, or nitrate of lead. The succinate of soda exhibited 

 the same phenomena. 



d. It precipitated the nitrate of barytes white, nitrate of 

 nickel applegreeu, sulphate of cobalt peachblossom colour, 

 nitrate of mercury white, muriate of iron at a maximum 

 brown. The succinate of soda comported itself in every in- 

 stance iri the same manner. 



e. T'.'ree parts of nitric acid were evaporated from onr of and treatment 

 this acid. It was not decomposed, being only render >d *^ ni " c 

 whiter and more pure. 



Succinic acid treated with nitric exhibited the same re- 

 sults. v 





To demonstrate the difference between this acid and the It differed from 

 benzoic, I saturated twenty parts with soda, and dissolved the benzoic 



1 • n -m /r • • • i i* add, 



the salt in 120 parts of water. Muriatic acid poured into 

 it did not render it in the least turbid, but next day a solid 

 crystallization was formed. 



The benzoic acid was saturated and dissolved precisely 

 in the same manner. The first drop of muriatic acid began 

 to separate the benzoic in a curdy form, and a larger quan- 

 tity converted the whole liquid into a light bulky mass. 



From these experiments it follows, that the acid separated 

 from the products of the saccho'actic by distillation, is not 

 the benzoic. 



This acid is volatile, and crystallizable ; it cannot there^ and from ail 

 $lm be compared with the acetic, oxalic, suberic, malic, 0lhers * 

 citric, or tartaric Neither has it any analogy with the pius- 

 sic, uric, or sebacic. There remain then only the gallic, 

 benzoic, melhtic, moroxylic, pyrotartaric of Rose, and 

 succiuic, to which it can be analogous. ' 



It does not resemble the gallic, for it does not precipitate 

 iron black, and when combined with soda acts neither on 

 copper nor on lead. The benzoic acid is much less soluble 

 in water, and the benzoate of soda precipitates almost all 

 metallic salts. The mellitic acid comports itself very dif- 

 ferently, according to Klnproth, with metallic solutions. 

 The same may be said of the moroxylic and pyrotartaric. 



Vol. XXVI— June, 1«10. L £ut 



