CONIFEE^E 23
found in the Western parts of the United States, and Adamsl has reported
upon similar " wood turpentines ". These results are as follows:—
TUKPENTINE FROM PlNUS PONDEROSA (LAWS).
The specific gravity of the oil was 0-8625; the index of refraction
1*4772; and the specific rotation [a]D '= - 14-39°. On fractionation of
500 grams of oil the following results were obtained:—
Temperature
(corrected).°C.
164-0-168-2
168-6
169-0
169-2
170-5
171-0
171-6
172 4
175-0
179-5
179-5 +
Distillate.Observed.Per Cent.
5-01
9-94
9-36
9-20
10-45
10-71
10-28
9-69
10-36
7-04
7-74Cumulative.Per Cent.
5-01
14-95
24-31
33-51
43-96
54-67
64-95
74-64
85-20
92-24
99-98Specific
Gravity
at 15°.0-8578
•8595
•8601
•8606
•8608
8612
•8615
•8619
•8621
•8631
•9186
Index of
Refraction
at 15°.1-4740
1-4750
1-4752
1-4753
1-4754
1-4757
1-4760
1-4762
1-4763
1-4775
1-5063
Specific
Rotation
at 20°.-13-81
-13-70
-13-17
-12-92
-12-73
-12-98
- 13-33
-14-17
-17-15
- 24-13
+ 0-86
Laevo-a-pinene, /2-pinene, and laevo-limonene were detected in the oil.
TURPENTINE FROM PINUS PONDEROSA SCOPULORUM (ENGELM).
The oil had the following characters : specific gravity 0'8639 at 15°;
index of refraction 1*4727 at 15°.
The physical constants of the fractions obtained on distillation are as
follows:—
Temperature
(corrected).°C.
157-6-158-5
159-5
159-9
160-1
160-9
161-7
162-6
165-2
170-2
173-0
177-1
183-3
183-3 +
Distillate.Observed.Per Cent.
2-03
9-69
9-97
10-21
10-06
9-39
9-97
9-12
10-50
5-94
6-25
2-19
4-60Cumulative.Per Cent.
2-03
11-72
21-69
31-90
41-96
51-35
61-32
70-44
80-94
86-88
93-13
95-32
99-92dl5°.
Specific
Gravity
at 15°.0-8586
-8621
•8620
•8620
•8620
-8620
•8623
•8626
•8626
•8615
-8593
•8576
—
ND15°
Index of
Refraction
at 15°.1-4686
1-4701
1-4702
1-4705
1-4706
14711
1-4714
1-4722
1-4735
1-4752
1-4758
1-4769
a-Pinene, /3-pinene, and limonene were found in the oil.
(^1) Jour. Ind. Eng. Chem., 1915 (7), 957.