Chemistry and Physics. 217 



ethereal odor, boiling at 122°-124°, which analysis showed to he 

 ethyl-butyryl, and a considerable quantity of butyrone. To 

 hydrogenate this mixed ketone, a layer of water was placed in a flask, 

 and on this the ketone was placed. '" ' " '" " " 



ments, these e 



the water, evolved hydrogen and^ose through the ketone again, 

 and so on. On fractioning, a limpid mobile highly refracting 

 liquid passed over at 134°, which had an agreeable ethereal odor 

 and a burning taste, and which afforded on analysis the formula 

 CgHj^O. Hence it is a hexyl alcohol, and since it is formed by 

 the fixing of hydrogen on ethyl-butyryl ketone as isopropyl alco- 

 hol is from acetone, it is a secondary alcohol. The reaction is 

 expressed as follows : — 



( C,H, ( CoHg 



\ CO +H,=: \ CHOH 



(C3H, (C3H, 



Isohexyl alcohol is soluble in ethyl alcohol and ether, scarcely in 

 water. Its density at 20° is 0-81825, it etherifies readily with 

 hydriodic acid, yielding an iodide boiling at 164°-166°, and an 

 acetate boiling at 149°-151°, Beside this alcohol, an oily liquid 

 was obtained in the distillation after treatment with sodium 

 which boiled at 252°-255°, and had the composition Ci2H2 692- 

 Investigation showed it to be a pinacone produced by the union 

 of two molecules of the ethyl-butyryl, with a fixation of an atom 

 of hydrogen on each. Its formula is— 

 HgCa C2H5 

 HOC-COH. 



Treated with sulphuric acid, and fractionated, it yielded on 

 ■"^"^"""^ numbers indicating £ * - • -1^ j _ i-„j_^ 



carbon, but the qm 



Bull. t^oc. Gh., II, XXV, '7, Jan., 1876. g. f. b. 



5. On Rosolic ^c^U— GiJAEBE and Cako have made a more 

 complete investigation of the acid which Wanklyn and Caro 

 obtained from rosaniline by converting it into the diazo-compound 

 and then decomposing it by water, with a view to throwing some 

 light upon the constitution of rosaniline itself. This acid, which 

 had been called rosolic acid, was supposed to be identical with a 

 substance obtained by the action of oxalic acid on phenol, by 

 Kolbe and Schmitt. But this latter product was shown by Dale 

 and Schorlemmer to be a mixture, and they isolated from it a 

 coloring matter which they termed aurin, and Fresenius separated 

 a second substance which he termed coraUin. Graebe and Caro 

 propose therefore to retain the name rosolic acid for the rosani- 

 line derivative. The rosolic acid was prepared by the method 

 given above and gave on analysis the formula C^qB.^^0^. It 

 forms ruby-red crystals with a green reflection, is soluble in hot 

 alcohol, glacial acetic acid and ether, insoluble in benzine and 

 Am. JoDB, Sot,, Thiri> Sbrtes-Vol. XI, No. 63.-Mabch, 1876. 



