Du Mez—The Galenical Oleoresins. 
1081 
Table 82. —Ash contents of commercial oleoresins. 
Sample 
No. 
Date 
Observer 
Source 
Per cent of 
ash 
Foreign 
constituents 
1. 
m6 
DuMez . 
Squibb & Sons. 
0.15 1 
2. 
Lilly & Co. . .. 
0.26 
Copper 
3. 
“ 
...... 
Sharp & Dohme. 
0.27 
1 Contained ether. 
Acid number: The acid numbers obtained for the oleo¬ 
resins prepared in the laboratory were found to be fairly 
uniform regardless of the solvent employed in extracting the 
drug, except in the case of petroleum ether, when the value 
found was low, namely, 11.2. The values obtained for the com¬ 
mercial samples examined were almost identical with those ob¬ 
tained for the laboratory preparations, even though the former 
in all cases contained about twice as much volatile matter (gen¬ 
erally essential oil, in one case, unevaporated solvent in addi¬ 
tion) as the latter. The values obtained for this constant in the 
laboratory are given in the tables which follow. 
Table 83 — Acid numbers of oleoresins prepared in the laboratory. 
Sample 
No. 
* 
Date 
Observer 
Solvent 
Acid 
number 
1. 
1916 
DuMez... 
Alcohol. 
13.9 
2 ......... 
Acetone. 
14.5 
3. 
“ 
13.8 
4. 
“ 
13.5 
5. 
“ 
4 * 
Ether... 
13.7 
6. 
“ 
“ 
Petrol, ether. 
11.2 
Table 84 — Acid numbers of commercial oleoresins. 
Sample 
No. 
Date 
Observer 
Source 
Acid 
number 
1. 
1916 
DuMez. 
Lilly & Co. 
13.3 
2. 
Sauibb & Sons. 
13.8 1 
3. 
.4 
44 
Sham & Dohme. 
14.0 
Contained ether. 
Saponification value: Saponification values of 103.4 to 
110.4 were obtained for the oleoresin when prepared with 
