— 4i — 



an intense mignonette odour, solidifies in the cold 1 ), is not fluorescent, 

 and shows the following constants: di 5 o 0,961; «Di7°-f- 3 1° 20'; acid 

 number 16; ester number 85. 



With alcoholic potash the oil develops bases of an ammonia- 

 like odour; moreover the presence of aldehydes w r as observed. To 

 produce 1 kilo oil, 33000 kilos blossoms, value ( £ 1,500, would be 

 required. 



1300 kilos orange-blossoms (April 1902) yielded o,o6°/ essential 

 oil of the following constants: d 15 o 0,9245; « D — 2°30 / ; acid number 4; 

 ester number 102; content of anthranilic acid ester 6,90 % 2 ). 



8000 kilos French rose-blossoms yielded 0,052 % essential oil 

 of the solidifying point 5 to 7 ; d i5 o 0,967; « Dl7 o — i°55'; ester 

 number 4,6; ester number after acetylation 295. By means of phthalic 

 acid anhydride, 75 to 80 % alcohols were isolated from the oil, of 

 which 75% consisted of phenyl ethyl alcohol, and 25°/ of the 

 other primary alcohols present in rose oil. 



45 kilos German roses yielded 0,0107 % essential extract-oil. 

 Solidifying point -)- 12 ; d 19 o 0,984; «d 17 o -J-o°o/; acid number 3; 

 ester number 4; ester number after acetylation 313,5; content of 

 phenyl ethyl alcohol 75%, of primary aliphatic alcohols i5°/ 3 ). 



2000 kilos jasmine-blossoms (July, August) yielded 0,077% 

 jasmine-blossom oil; d 15 o 0,9955; «d — i°; acid number 2,5; ester 

 number 190 = 51% benzyl acetate. In September/October, there 

 was obtained from 1800 kilos blossoms 0,0718% oil which had slightly 

 different constants; d 15 o 0,967; «d faintly to the left; acid number 3,5; 

 ester number 161 =43,3% benzyl acetate. The oil contained 

 a fairly large quantity indol and, judging by the fluorescence, also 

 methyl ester of anthranilic acid. Contrary to this is Hesse's 

 observation, who had obtained jasmine-blossom oils free from indol 

 both by distillation of jasmine-blossoms, and by extraction. The 

 calculation of the yields also shows a striking difference, as the quan- 

 tity of essential oil obtained by v. Sod en exceeds by nearly four 

 times that ascertained by Hesse and by Pillet 4 ). 



From 1000 kilos cassie-blossoms (Acacia famesiana, October 

 to December), 840 grams = 0,084% essential oil were obtained; 



*) We have previously obtained by distillation of fresh mignonette-blossoms 

 with water vapour, 0,002 °/ essential oil of mignonette-blossoms, of the consistency 

 of orris oil. Report October 1891, 40. 



2 ) Comp. Hesse and Zeitschel, Journ. f. prakt. Chemie II. 66 (1902), 

 512; Report October 1903, 50. 



3 ) The essential extract oil from German rose-blossoms was produced by us 

 already in 1900, and a content of about 62°/ phenyl ethyl alcohol ascertained in it. 

 Berl. Berichte 33 (1900), 2302; Report October 1900, 54. 



4 ) Comp. A. Hesse, Berl. Berichte 37 (1904), 1457, also the present Report p. 49. 



