Fart IV.] Simonsen : Constituents of Indian Essential Oils. 
21 
TABLE II. 
Hazara I’erpene. 
Sind Terpene. 
B. P. 
163-164°/698mm. 
165-5-167°/707 
0-8565 
0-8552 
1-474 
1-474 
30° 
[“] j) 
-f 54-82° 
-1-62-2° 
44-62 
44-69 
The constitution of this terpene has not up to the present been 
elucidated, experiments on the subject being still in progress. From 
a consideration of the molecular refraction the terpene would appear 
to be bicyclic.* 
The neutral sodium sulphite solution containing the ketone was 
rendered strongly alkaline and the ketone isolated in the usual manner. 
The ketone boiled at 230-231°/697mm. and was identified as d-l. 
■piperitone by conversion into the a and ^ semicarbazones melting at 
225-227° and 174-178° respectively and the oxime melting at 117-118°. 
The fraction which boiled above 140°/200mm. (29'8 per cent) was 
shaken with sodium carbonate solution which remove a trace of free acid 
(A) and then with dilute sodium hydroxide solution to remove the phenol 
(B) . The residual oil was treated with alcoholic potassium hydroxide 
solution to hydrolyse the esters present, the neutral oil separated, the 
alkaline solution being reserved for further investigation (C). The oil 
was carefully fractionated imder diminished pressure (29mm.) when the 
main fraction was found to distil at 168-180° and on redistillation boiled 
fairly constantly at 176-177°/31mm. This somewhat viscid oil 
evidently consisted of a sesquiterpene alcohol and had the following 
30 ® 30 ® 
constants : — D|^! 0’9674, 1‘5034, [a]^ -|-12'8°. 
OT148gave 0-3458 COg and 01138 HgO, C=82-2, H=ll-0. 
0 1296 gave 0 3885 CO2 and 0T306 HgO, C=81-8, H=ll-2. 
CjgHgiO requires C=81-8, H=10-9 per cent. 
The sesquiterpene alcohol described by Roberts (loc. cit. p. 1470) 
would not appear to be identical with this alcohol since he obtained 
analytical results agreeing with the formula C15 H26 0. His alcohol 
*See footnote page 19. 
[ 131 ] 
