Part IV.] Simonsen : Constituents of Indian Essential Oils. 
27 
Fraction I. — This fraction which e\adently consisted of a hydro- 
carbon had the following constants : — 0'8402, 1'4671, 
30 ° 
[a]^ — 0'98°. After repeated distillation over sodium it boiled almost 
constantly at 109°/ 100mm. and had the following constants : — 
orvo OAO QAO 
D ^0-8296, 1-4695, —5-45°. 
0-0851 gave 0-2759 COg and 0-0908 HgO, C=88-4, H=ll-9. 
CigHig requires C=88-2, H=ll-8 per cent. 
This oil was found to be a mixture of dipentene and 1 . — a. phell- 
andrene. When dissolved in acetic acid and treated with bromine in 
the usual manner a copious precipitate of dipentene tetrabromide 
separated which after crystallisation from ethyl acetate melted at 124- 
125°. (Found Br,=70-1, calc. Br=70-2 per cent.) The presence of phell- 
andrene was shown by the formation of phellandrene nitrosite on 
treatment of the hydrocarbon by Wallach’s method (Annalen. 1895, 
287, 371). The yield of nitrosite was poor and after recrystallisation 
from a mixtirre of chloroform, alcohol and ether it was obtained in fine 
needles melting at 103-104°. In one experiment the melting point 
was raised to 107° and this specimen was evidently nearly pure 1 . — a 
phellandrene-a-nitrosite. p phellandrene did not appear to be present 
since no trace of ketone was formed on treatment with oxygen and 
exposure to sunlight. 
Fraction II. — This fraction was nearly pure dipentene and gave on 
treatment with bromine an excellent yield of dipentene tetrabro- 
mide. 
Fraction III. — This fraction consisted of a mixture of dipentene and 
d-hnalol. They were identified by conversion into the tetrabromide and 
phenyl urethane respectively. 
Fractions IV , V, VI. — These three fractions consisted of practically 
pure (Z-linalol as shown by the following analyses and constants : — 
OfiO OAO 
Fraction IV. Df§: 0-8563, 1-4604, [a]^ +12-74°. 
0-0854 gave 0-249.'i COg and 0-0932 HgO, C=79-6, H=12-l. 
C^H.gO, requires C=77-9, H=ll-7, per cent. 
30 ° 30 ° 
Fraction V. D|^-§o 0-8618, 1-4585, [a]^ +14-54° per cent. 
0-1012 gave 0-2974 COg and 0-1054 HgO, C=77-5, H=ll-6. 
80 ° 30 ° 
Fraction VI. D|§: 0-8647, 1-46, [a]^ +13-82°. 
0-1024 gave 0-2926 CO 2 and 0-1064 HgO, C=77-9, H=ll-5. 
r 137 1 
