AND COMPOSITION IN OEGANIO COMPOUNDS. 
265 
Table X. 
Observed boiling-point. 
Hydride of Benzoyl 
CuH, 0, 
Kopp, 179°. 
Hydride of Valery 1 
Cio 0^ 
Kopp, 93°; Limpricht, 96°; Chancel, about 110°. 
Chloride of Benzoyl 
o,ci 
Malaguti, 195°; Cahours, 196°; Kopp, 198°. 
Chloride of Valeryl 
G0H3 0,C1 
Bechamp, 115° — 120°. 
Mixed Acetone A 
CiaH, 0, 
Friedel, 198°. 
Mixed Acetone B 
C,,H,,0, 
Williamson, 120°. 
Hydride of Benzyl 
CuH, 
Church, 104°; Deville, 108°; Gerhardt, 114°. 
Hydride of Amyl 
CxoH,, 
Frankland, 30°. 
Chloride of Benzyl 
C„H, Cl 
Cannizzaro, 175° — 176°. 
Chloride of Amyl 
C.oH,,Cl 
Balard, Kopp, 101°; Pierre, Cahours, 102°. 
This regularity does not, however, obtain in a general manner, as will be apparent 
by comparing the boiling-points of cyanide of phenyl (benzonitrile, Fehl^g, Kopp, 191°; 
Limpkicht, 192°) and of cyanide of butyl (valeronitrile, Schliepee, 125°; Guckelbeegee, 
from 125° to 128°), or the boiling-points of toluidine (Muspeatt and Hofmann, 198°) 
and of amylamine (Beaziee and Gossleth, 93°; Wuetz, 95°). 
The boiling-points of the terms of several series which have been previously mentioned 
frequently almost coincide, a cu'cumstance which furnishes a valuable means of controlling 
boiling-point observations. If, for example, in a series of methyl-ethers, corresponding 
to various monobasic acids with four equivalents of oxygen, and in the chlorides of the 
radicals contained in the same acids, the boiling-points be found so near to each other 
as is shown in the following Table, — 
Table XI. 
• 
Observed boiling-point. 
Acetate of Methyl 
Cg Hg 0^ 
Andrews, 65°; Kopp, 56°; Dumas and Peligot, 58°. 
Chloride of Acetyl 
C, Hg 0,CI 
Gerhardt, 55° ; Kopp, 55° — 56°. 
Propionate of Methyl 
Cg Hg 0, 
Calculated, 74°. 
Chloride of Propionyl 
Cg H, 0,C1 
Bechamp, about 80°* 
Butyrate of Methyl 
Favre and Silbermann, Delffs, 93°; Kopp, 95°; Pierre, 102°. 
Chloride of Butyryl 
Cg H, 0,C1 
Gerhardt, 95°. 
Valerate of Methyl 
Cj, Hjj 0^ 
Kopp, 114°— 115°. 
Chloride of Valeryl 
GoHg 0,C1 
Bechamp, 115° — 120°. 
Benzoate of Methyl 
CigHg 0^ 
Dumas and PGigot, Kopp, 199°. 
Chloride of Benzoyl 
G,H, 0,C1 
Malaguti, 195°; Cahours, 196°; Kopp, 198°. 
Toluate of Methyl 
Cl8 Hio O4 
Calculated, 209°. ^ 
Chloride of Toluyl 
C,gH, 0,C1 
Cahours, 214° — 216°. 
we are justified in expecting that new determinations will furnish also a more perfect 
coincidence of the boiling-points of the following pairs of substances : — 
?.ID(.CCLX. 2 N 
