In order to ascertain the total percentage of camphor and to separate
the remaining constituents as completely as possible, a quantity of the
oil was fractionated into seven fractions, as follows:
Fraction 1, 160° C.; fraction 2, 160° to 170° C.; fraction 3, 170°
to 178° C.; fraction 4, 178° to 182° C.; fraction 5, 182° to 186°
C.; fraction 6, 186° to 190° C.; fraction 7, 190° to 195° C. These
fractions (125 grams) were refractionated into 10 separate fractions,
as shown in Table II, a determination of the physical properties of
each fraction also being made.
+Table II.+--_Fractionation of the oil of black sage, showing the
physical properties of the fractions._
---------+------------+---------+--------+----------+-----------+-------------
| |Distilled|Specific| Rotation |Re-fraction|
Fraction.|Temperature.| over. | gravity|in 50 mm. | N_{D} | Remarks.
| | | at | tube. | 28° C. |
| | | 26° C. | | |
---------+------------+---------+--------+----------+-----------+-------------
|_Degrees C._| _Per | |_Degrees._| |
| | cent._ | | | |
1 |Below 160 | 2.5 | 0.8070 | + 6.9 | 1.4570 | Slight
| | | | | |terebinthine
| | | | | |odor.
2 |160 to 170 | 6.8 | .8768 | +10.1 | 1.4613 | Cineol-like
| | | | | |odor.
3 |170 to 174 | 7.8 | .8865 | +10.1 | 1.4640 | Do.
4 |174 to 178 | 12.1 | .8920 | +10 | 1.4648 | Decidedly
| | | | | |cineol-like
| | | | | |odor.
5 |178 to 182 | 14.8 | .8996 | +10.2 | 1.4652 | Do.
6 |182 to 186 | 8.6 | .9077 | +11.5 | 1.4659 | Slight
| | | | | |camphoraceous
| | | | | |odor.
7 |186 to 190 | 8 | .9105 | +11.1 | 1.4673 | Strong
| | | | | |camphoraceous
| | | | | |odor.
8 |190 to 195 | 8.1 | .9130 | +11.7 | 1.4683 | Do.
9 |195 to 200 | 7.7 | .9170 | +11.6 | 1.4710 | Do.
10 |200 to 208 | 11.6 | .9220 | +10.4 | 1.4710 | Do.
Residue |208 and | 12 | .9236 |..........| 1.4854 | Do.
| above | | | | |
---------+------------+---------+--------+----------+-----------+-------------