Part III.] Gopal Rau and Simonsen : Oils and Fats from seeds. 3 
PART I. 
THE OIL FROM THE SEEDS OF CHLOROXYLON SWIETENIA. 
Chloroxylon Swietenia (satinwood) is a moderate sized tree fairly 
widely distributed in the dry forests of Central and South India and 
Ceylon especially in sandy and laterite soils. 
So far as the authors are aware the oil obtainable from the seeds 
does not appear to have been previously investigated although Auld 
(Journ, Chem. Soc. Trans. 1909. 95. 964.) has examined the wood and 
has shown that it contains an alkaloid to which the name chloroxyl- 
onine was given, a fixed oil of specific gravity 0'965, and other bodies. 
The oil was present in the wood to the extent of 1 per cent, but Auld 
does not appear to have subjected it to a detailed investigation. 
The fresh seeds from C. Swietenia are low in oil content and only 
contain 16 per cent, of an oil which from its general properties may be 
classed as a non-drying oil. It does not appear to possess any parti- 
cularly valuable properties and the seeds cannot be considered likely 
to prove of any economic value. 
Experimental. 
The oil was obtained from the seeds by extraction with light petrol- 
eum, when after the removal of the solvent it was obtained as a thin 
pale yellow oil having the following constants : — 0'909, Nd^ 
1‘473, acid value 9'0, saponification value 164, acetyl value nil, iodine 
value 84-3, unsaponifiable matter nil, Reichert-Meissl value 01. 
For the separation of the fatty acids present in the oil, a quantity 
of the oil (100 grammes) was hydrolysed with alcoholic potassium 
hydroxide solution and after the removal of the alcohol the potas- 
sium salts were converted into the lead salts which, alter drying, 
were separated by means of ether in the usual manner. In tnis way 13 
grammes of solid fatty acids and 67 grammes of liquid acids were 
obtained. 
Identification of the Solid Acids. 
The crude solid acid was converted into the methyl ester which was 
purified by distillation under diminished pressure (100mm.) when the 
following fractions were 
obtained : — 
No. 
B. P. {uncorr.) 
Yield. 
I 
up to 240° .... 
2 grammes 
II 
240-250° .... 
2 
Ill 
254-258° .... 
If* 
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