Action of Chloride of Bensoyle on Aldehyde-ammonia. 303 



creases. Benzoic acid is known as a strong acid; with the 

 entrance of one equivalent of amide, which induces basicity, basic 

 properties show themselves, for amidobenzoic acid forms com- 

 pounds not only with bases, but with acids ; with the entrance 

 of a second equivalent of amide, the properties of an acid are 

 entirely lost, for binamidobenzoic acid forms compounds with 

 acids alone. 



The formula of the hydrochloric acid compound of binamido- 

 benzoic acid is C^^ ^4 (NH^)^ 0^, 2HC1. It crystallizes in white 

 needles ; it is precipitated by strong hydrochloric acid from its 

 aqueous solution in flocks, which change into these needles. 

 When its aqueous solution is mixed with bichloride of platinum, 

 a body is obtained which appeared to be <' adt s 



^ C14H4(NH2)2 0^2(HC1, PtCP). 



The sulphuric acid compound of binamidobenzoic acid is 

 obtained by dissolving the hydrochloric acid compound in dilute 

 sulphuric acid. Its formula is C^^ H^ (NH^)^ 0^ 280^ HO. It 

 crystallizes in colourless plates. With nitric, acetic, and oxalic 

 acid, binamidobenzoic acid forms well-defined compounds, all of 

 which crystallize. 



Limpricht* found that the action of acetate of iron on nitro- 

 benzoic acid was the same as that of sulphide of ammonium, 

 benzamic acid being produced. 



In the hope of obtaining a compound corresponding to the 

 alcohol radicals, Limpricht f tried the action of chloride of ben- 



Q14JJ6Q2^ 



zoyle on aldehyde-ammonia. Butinsteadof thebody ^4 tjs qs fi 

 which would be formed according to the following equation, — 



CI J "*" NH-* / - C^4H502/ + ^^^ ^^' 

 Chloride of benzoyle. Aldehyde-ammonia. New body, fo'i '^{i^jjbiKr:, 



a substance was obtained having the composition C^^H^'^N^O^, 

 of the production of which Limpricht gives no explanation. It 

 crystallizes from alcohol in fine concentrically grouped needles. 

 It is not soluble in water. Treated with potash, it gives ammonia, 

 resin of aldehyde, and benzoic acid. With peroxide of lead and 

 sulphuric acid, benzamide and aldehyde are formed. These 

 bodies are also the product of the action on it of nitrous acid. Its 

 alcoholic solution reduces neither silver nor mercury. Limpricht 

 observes that the formula contains the elements of benzamide^ 



iiiaH(iaii;> sJa ;*«o1 v;i^i-.u>' A,- -•> >= ■..■ -■■■■■ ■. .-:.;'i.;4-''. jiiS 

 * Liebig's Annalm, July, p. 118. t Ibid. p. 119. , 3j|> 



