50 Indian Forest Records. [Vol. IV. 
of turpentine.” Both of them were fractionated with the follow¬ 
ing results: — 
TABLE X. 
Distilling between 
Rectified spirit of 
turpentine. 
Commercial 
spirit of 
turpentine. 
160°—165° C. 
23-0% 
16-5% 
165°—172° C. 
16-0% 
15-5% 
172°—180 °C. 
16-0% 
12-0% 
180°—200° C. 
36-0% 
16-0% 
Above 200° C. 
90% 
40-0% 
The rectified oil for internal use showed only 23 per cent, passing 
below 165° C. and 39 per cent, passing below 172° C. and 55 per 
cent, only passing below 180° C. The test of a good oil according 
to the British Pharmacopoeia is that it should all distil between 
160°—180° C. 
The “ commercial spirit of turpentine ” has only 16'5 per cent, 
passing below 165° C. and 32 per cent, passing below 172° C. The 
latter leaves a residue of 40 per cent, above 200° C. 
Another very good sample obtained from a Dehra Dun druggist 
under the name of French oil of turpentine gave the following 
fractions: — . „ 
150°—155° C. .. 
.. 
71-0 per cent. 
155°—163° C. . 
13-5 „ 
163°—172° C. 
. 
. 
. 
13-5 „ 
Residue above 172° C. . 
. 
. . 
20 „ 
It may he remarked here that the French oil is the highest 
quality of turpentine available in the world’s market and is known 
to wholly distil between 155°—163° C. This sample of the French 
turpentine, however, has 84'5 per cent, passing below 163° C. and 
our redistilled oil has 80 per cent, passing nearly below the same 
temperature. 
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