26 



Mr. C. Schorlemmer on Octyl Compounds. [June 17, 



temperature during the reaction. As soon as a permanent brownish tinge 

 showed that a slight excess of chromic acid was present, no more of the 

 oxidising mixture was added. The liquid was shaken from time to time, 

 and distilled after a few hours. The acid distillate was neutralized with 

 sodium carbonate ; only a small quantity of an acid was formed ; the 

 chief oxidation-product consisted of a neutral oil, having the odour of 

 methyl-ceuanthol, and, like this compound, it formed with hydrogen- 

 sodium sulphite a crystalline compound. The liquid having no constant 

 boiling-point, and the quantity being only small, I did not analyze it, but 

 oxidised it further by heating it with the chromic-acid solution. The acid 

 distillate was neutralized with sodium carbonate, the solution of the sodium 

 salts was evaporated and distilled with diluted sulphuric acid. An oily 

 acid, distilled over the residue in the retort, contained a large quantity of 

 acetic acid, which was obtained pure by several distillations ; from it silver 

 acetate was prepared and analyzed. 



0*3355 of this salt contained 0*2160 silver. 



Calculated for C 2 H 3 Ag 0 2 . Found. 

 64*67 per cent. Ag. 64*38 per cent. 



The distillate, which contained the oily acid, was neutralized with an 

 excess of barium carbonate, boiled and filtered. On evaporation, the 

 barium salt separated in form of an amorphous skin ; it could not be ob- 

 tained in the crystalline state ; I therefore dissolved it again in more water, 

 and precipitated it fractionally with silver nitrate. 



1st Precipitate .. 0*1535 gave 0*0/54 silver. 

 2nd „ .. 0*3718 „ 0*1798 „ 



Calculated for silver caproate, Found. 



C 6 H u Ag0 2 . (1) (2) 



48*43 per cent. Ag. 49*12 48*36. 



In the liquid, from which the second precipitate had been filtered off, a 

 further addition of silver nitrate did not give any more precipitate. On 

 evaporating it, small granular crystals separated, the analysis of which 

 showed that they consisted of impure silver acetate • 0*5540 contained 

 0*3440 silver, or 63*23 per cent. 



Besides caproic and acetic acids, a small quantity of an acid having the 

 composition of caprylic acid was formed. This acid was precipitated 

 probably as a basic salt, together with the excess of barium-carbonate, 

 used in neutralizing the oily acid ; it could not be extracted bv boiling 

 water. On dissolving the mixture of barium-salt in diluted nitric acid, 

 oily drops separated. The liquid was distilled, the distillate neutralized 

 with ammonia and precipitated with silver nitrate in two fractions, 



1st Fraction . . 0*1344 contained 0-0566 silver. 

 2nd »i 0-0465 „ 0'0203 



