Schorger—Chemistry of American Conifers. 
737 
contained 64.26 per cent Ag; Ag calculated for CH 3 COOAg 
is 64.64 per cent. 
The highest boiling fractions contained “green oil” of which 
no definite derivatives were obtainable. 
The major portion of the oil boiled between 164-167° and 
consisted of /Fpinene. A fraction, b. p. 164-166°, d 15 ° 0.8720, 
aD 22 0 ”17.19 0 gave a large yield of sodium nopinate on oxidation 
with alkaline K 2 Mn 2 0 8 . The free nopinic acid melted at 126°. 
The approximate composition of the oil was the following: 
l-a~pinene 25% ; l-/3-pinene 48% ; i-(and 1-) limonene 6% ; bomyl- 
acetate 6%; free alcohol as borneol 6.5%; “green oil” 3%; 
furfural, trace. 
Oleoresin of Sand Pine (Finns clausa Sarg.) 1 
The sand pine is a small tree practically confined in its range 
to the state of Florida. The oleoresin contained 18.93% volatile 
oil, 72.30% rosin, the remainder consisting of water and foreign 
matter. Two samples of the volatile oil had the following prop¬ 
erties: d 15 ° 0.8725-0.8723; n Dl5 ° 1.4768-1.4767; a D20 °-22.49 to 
-22.80°. 
The first fraction of the oil b. p. 157-160°, d 15 ° 0.8656, a D2 o°- 
20.17°, cantained a-pinene the nitrolpiperidine of which melted 
at 119°. Camphene was found in the fraction b. p. 160-162°, 
d 15 ° 0.8671, a D 2o°-29.31°, by conversion into isoborneol melting 
at 207-9°. 
/Fpinene was found to constitute about 75% of the oil. The 
sodium nopinate obtained was oxidized to nopinene whose semi- 
carbazone melted at 189°. Since the oil consisted so largely of 
/8-pinene an attempt was made to isolate it in a pure state. 
After ten fractionations over metallic sodium, two fractions of 
fairly constant boiling point were obtained. The properties of 
these fractions and of a synthetic /Fpinene prepared by Wallach 
were the following. 
Fraction B. P. n D20° d 20 ^ [a] D 
20 ° 
1 164-165° 1.4772 0.8700 -25.00° 
2 165-166° 1.4784 0.8709 -23.73° 
1 Jour. Ind. Eng. Chem. 7, 321 (1915). 
M Calculated 
found for C 10 H 16 /= 
44.19 43.54 
44.23 43.54 
47—S. A. L. 
