XI. A, 2 



Brill: Hydnocarpus venenata Gaertner 



79 



The alcoholic mother liquor from the chaulmoogric acid sepa- 

 ration was then fractionally treated with a concentrated aqueous 

 solution of barium acetate according to the method described by 

 Power and others in the references cited. Five fractions of 

 barium salts were obtained. The acid was freed by adding 

 dilute sulphuric acid and extracting the resulting suspension 

 with ether. The melting points of the fractions ranged : I, 48° ; 

 II, 53°; III, 43°; IV, 56°; V, 55°. Fractions IV and V on 

 recrystallization from alcohol and ethylacetate melted at 59° to 

 60° C. This is the same melting point found by Power and 

 Barrowcliff for hydnocarpic acid. Other values found for this 

 acid are: 



A solution of 1.7172 grams in 50 cubic centimeters of chloroform 

 produced in a 2-decimeter tube a rotation of +4.62°, whence [oo] 

 30/D = +67.26°. 



2.6095 grams required 102.2 cubic centimeters N/10 NaOH for neu- 

 tralization. Theoretical for neutralization of 2.6095 grams of 

 CisHjtCOOH requires 103.4 cubic centimeters N/10 alkali. 



1.0920 grams of the sodium salt gave 0.2808 gram NaiSO*, whence 

 Na = 8.33 per cent. Theoretical for CwHjiCOONa would give 

 0.2829 gram Na.SO., or Na = 8.38 per cent. 



0.1533 gram absorbed 0.1548 gram of iodine, whence I = 101 per cent. 

 Theoretical for CuHuCOOH with one ethylenic linking requires 

 I = 100.6 per cent. 



DISCUSSION 



The chemical constitution of the oils from Taraktogenos kurzii, 

 Hydnocarpits wightiana, Hydnocarpus anthelminticus, and Hyd- 

 nocarpus venenata is similar, but the oil from Gynocardia odorata 

 is different. Table I gives the chemical properties of these oils. 



Table I. — Chemical constants of the oils from the seeds of Taraktogenos 

 kurzii (chaulmoogric), Hydnocarpus wightiana, Hydnocarpus anthel- 

 minticus, Hydnocarpus venenata, and Gynocardia odorata. 





Chaul- 

 moogrra. • 



H. wight- 

 iana.^ 



H. anthel- 

 minticus. a 



H. vene- 

 nata. 



Gynocardia 

 odorata. • 





22° 



0.951 at 25°. 

 +52.0° .... 



103.2 



23.9 



213. 



22° 



0. 958 at 25°. 



+57.7° 



101.3 



3.8 



23° 



0.953 at 25°. 



+25.5° . 



86.4 



7.5 



20° 



0.948 at 30°. 

 +52.03°.... 



99.1 



4.4 



Liquid at 20°. 



0. 925 at 25°. 



Inactive. 



152. 8. 



4.9. 



197. 



Present. 

 Absent. 

 Do. 





Specific rotation - 



Iodine value - _ 



Acid value . 



Saponification value 



207... . 



212 



200.3 



1.477—.... 



Present 



do 



Index of refraction 



1.476.. . 





1.473 



Present 



do 



Cyanogenetic elucoside 



Chaulmoogric acid 



Present 



do 



Present 



do 





do 



do... 



... do . 



. do 













■ Taken from the data published by Power et al. in the references already cited. 



