Part I.] Pttran Singh: Turpentine Oil and Indian Rosin. 37 
The following table gives the results of their examination: — 
TABLE II. 
— 
A, 
B, 
j 
160°—165° C. 
69-0% 
60-0% 
41-0% 
Nil' 
165°—172°C. . 
18-0% 
22-5% 
38-5% 
25-5% 
172°—180° C. 
5-0% 
9-0% 
11*5% 
28-5% 
180°—200° G. 
3*5% 
3*5% 
5'5% 
20-5% 
Besidue above 200° 0. 
4-5% 
5-0% 
3-5% 
25-5% 
Specific gravity at 30° C. . 
0-858 
0-861 
0-869 
0-880 
Acid number . 
1-63 
1-95 
1-61 
5-05 
It will be seen that A x , B 1? Cj, have the same amount, viz., 
79—-83 per cent, passing below 172° C. The general character of the 
fractions remains the same. There is no doubt that washing is very 
useful in removing the acidity of the oil and consequently the acidity 
of fractions has decreased a little. The specific gravity of D has been 
reduced from 0*883 to 0*880. 
III. 
Thinking that slow distillation might give a better quality of 
the oil, the stills were only charged twice in 24 hours, each opera¬ 
tion lasting 5^ hours as against 3J previously, and the distillate was 
fractionated as above : — 
A 2 denotes first 10 bottles of a charge (when only two charges 
were made in the day, each charge lasting about 5J 
hours against 3 to 3J hours under ordinary circum¬ 
stances) . 
B 2 denotes second 10 bottles of a charge (when only two 
charges were made in the day, each charge lasting about 
hours against 3 to 34 hours under ordinary circum¬ 
stances) . 
[ 37 ] 
