PHILIPPINE TERPENES AND ESSENTIAL OILS, III. 



103 



of acids were obtained. The neutral oils distilled in vacuo gave fractions at 10 

 millimeters of about 90 grams each, as follows: 



No. 



Boiling 



point. 



10 m. m. 



,30° 



Specific 

 gravity, 



30^ 



4° 



.30° 



Degrees. 

 80-89 

 89-130 

 130-145 

 145-165 

 165-158 

 160-180 



1.4650 

 1.4830 

 1.4970 

 1. 5030 

 1. 5100 

 1. .5270 



0. 842 

 0.871 

 0.916 

 0.932 

 0.952 

 0.968 



Degrees. 

 18.1 

 12.2 



Residue a thick, viscous, tarry oil. 



There were no indications of any separable, individual products, and nitration 

 and oxidation of these fractions under various conditions gave no promise of ob- 

 taining individual compounds. This oil obtained by the destructive distillation of 

 elemi is evidently a resin oil of the same general character and useful for the 

 same purposes as other resin oils. 



I have examined two specimens of elemi resin, one being from Culion 

 and the other from the Island of Mindanao, which were unusual in that 

 the terpene was almost entirely pinene, a solid hydrochloride melting 

 at 125° being obtained from each specimen. A few elemis from Mindoro 

 gave the following results : 



(1) Two kilos resin gave 240 cubic centimeters terpenes. Boiling point, 172° 

 30° _ 



to 174°; specific gTa.\ity,:^—0.S3U; N^i^=1.4680; A:^=115.5. The ter- 



' ^ ° •^' 4° D D 



pene proves to be phellandrene, giving a crystalline nitrite melting at 121°. 

 Probably this is a phellandrene. 



(2) One kilo resin, which has become somewhat hard, gave 95 cubic centi- 

 meters terpene. Boiling point, 175° to 177° at 760 millimeters; specific 



1.4687; A?£! =111.0. This gave a good yield of 



gravity, ?2! =0.8383; N?5! 



D 



tetrabromide melting at 105°. Therefore, the terpene is a, limonene. 



(3) Five hundred grams resin gave 60 cubic centimeters terpenes. Boiling 



point, 177° to 180° at 760 millimeters; specific gravity = 0.8383; N^iL =1.4687; 



A -—=7.3; tetrabromide melts at 124°. ITiis terpene is principally dipentene. 



(4) Five hundred and twenty grams resin gave 74 cubic centimeters oil. 



Boiling point, 172° to 173°.5 at 760 millimeters; specific gravity,2Y_ =0.8341; 



4° 



orio OAO 



N^^— = 1.4678; A^ii- = 114.8. Abundant precipitate of phellandrene nitrite melt- 

 ing after purification at 120°. Probably a phellandrene. 



(5) One and one-tenth kilos resin gave 140 cubic centimeters terpene. Boiling 



