1865.] of the Series C n U 2n+2 . 173 



In order to obtain the chlorides C 10 H 21 Cl, I proceeded in the same 

 manner as described in the preparation of chloride of heptyl. 



The chloride of decatyl from amyl is a colourless mobile liquid of a 

 pleasant, fruity smell ; it boils at 203-205, and has the specific gravity 

 0-8739 at 14. The chloride prepared from hydride of decatyl boils at the 

 same temperature, 203-205 ; its specific gravity is 0'898 at 16*' 5. The 

 odour of this chloride is fainter, not quite so pleasant, as if the true smell 

 was hidden by that of some impurity. At first it possesses a yellowish 

 colour, as Pelouze and Cahours have already observed; but it can be 

 obtained quite colourless by repeated distillations, when a small quantity of 

 a brown residue is always left behind. 



The analysis of the chloride from amyl I have already given in the pre- 

 vious paper; that of the chloride from the hydride gave the following 

 results : 



0-2857 substance gave 0-1938 chloride of silver and 0'0296 metallic 

 silver. 



Calculated for ,, , 



C 10 H al Cl. Found ' 



2<H 1%C1 20-18% 



Both chlorides are decomposed in exactly the same manner, when heated 

 with acetate of potassium and acetic acid, as described under acetate of 

 heptyl. The principal product consists of decatylene (diamylene) C 10 H 20 , 

 and only a small quantity of acetate of decatyl is formed. Both com- 

 pounds were separated and purified like the corresponding heptyl com- 

 pounds. 



The decatylene from amyl has the specific gravity 0-7438 at 18, and 

 boils at 160- 161; its analysis is given under (1). The decatylene de- 

 rived from the hydride boils at 157-159, and its specific gravity is 0*7596 

 at 12 ; the analysis of it is given under (2). Both are colourless mobile 

 liquids with only a faint odour. 



(1) 0-2332 decatylene from amyl gave 07340 carbonic acid and 0-3000 

 water. 



(2) 0-2965 decatylene from the hydride gave 0*931 carbonic acid and 

 0-383 water. 



Found. 



Calculated. I. II. 



120 85-7 85-84 85'64 



20 14-3 14-29 14-35 



140 100-0 100-13 99-99 



The acetate of decatyl from amyl is a colourless liquid, possessing a 

 pleasant smell of oranges ; it boils at 227-231, and has the specific gravity 

 0-8711 at 16 C. The acetate derived from the hydride has a similar 

 odour, but not quite so pleasant ; it boils at 226-230, and has the specific 

 gravity 0'8750 at 15. Both compounds gave the following analytical 

 data : 



