186 PHILIPPINE RESINS, GUMS, AND OILS 
TABLE 29.—Constants of champaka oil. 







| Specimen No. 
Constants. | 
| I. | ine 
| 
30° | 
Specific gravity 990 ---- --------------- ----------------~-------------------- 0. 904 0. 9107 
Ste: 30° | 
Refractive index N [ ~nnn wenn nora crn nn nce ese ccc ees] 1. 4640 1. 4688 
Pster number = otc: 220 ae eee ee oe ee eee | 424 146 
Hster number alter acetyl atin cs ee (eeeeecSssse5 199 

According to Brooks, when champaka oil is heated, a large « 
part of it is polymerized to resin. The oil obtained by steam- 
distilling consists largely of cineol. The solid which crystallizes 
from the freshly prepared oil is probably a ketone compound. In 
addition to iso-eugenol, the essential oil of yellow champaka 
flowers contains benzoic acid, benzyl alcohol, benzaldehyde, cin- 
eol, and p-cresol methyl] ether. 
Michelia champaca is a small tree with spear-shaped leaves, 
12 to 20 centimeters long and 2.5 to 6 centimeters wide. The 
flowers are yellowish brown, very fragrant, and from 4 to 5 
centimeters in length. They are highly prized by the Filipinos 
and by them are made into necklaces. 
MICHELIA LONGIFLORA Blume. CHAMPAKANG-PUTI. 
CHAMPAKANG-PUTI OIL 
Champaka oil obtained from this species has been exported 
to Europe from Java. According to Brooks * the purified oil 
is dark green in color. It possesses an intensely sweet, almost 
nauseating odor, which is very different from that of the oil * 
obtained from the flowers of Michelia champaca. 
The constants of the oil are as follows: Specific gravity, 
0.897; ester number, 180.0; refractive index, NW 1.4470. 
The above constants point to a rather large per cent of the 
esters of fatty acids. According to Brooks the oil contains lin- 
aloél, methyl eugenol, methyl-ethyl-acetic acid, and acetic acid. 
The odor of the oil is chiefly that of the methyl or ethyl ester 
of methyl-ethyl-acetic acid. 
Michelia longiflora is a small tree with white flowers. It is 
a native of Java and is occasionally cultivated in Manila. 

* Brooks, B. T., New Philippine essential oils. Philippine Journal of 
Science, Volume 6 (1911), page 333. 
