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Rosemary Oil [Oleum rosmarini). Colourless or faintly yellow; 

 d25° 0,894 to 0,912; «D25° not above -J- 15 ; the first io°/ of the 

 distillate must also be dextrorotatory. Ester-content (calculated as 

 bornyl acetate) at least 5%; total borneol at least 15 ^q 1 ); soluble 

 in 0,5 and more vol. 90 per cent, alcohol, and also in 2 to 10 vol. 

 80 per cent, alcohol. 



1 ) These requirements cannot be upheld; we have observed in good oils an 

 ester-content down to i,2°/ , and a total content of borneol down to about io°/ . 



Safrol (Safrolum). Colourless or faintly yellow;' d2so 1,105 to 

 1,106 *); «d + o°; boiling point about 233 °; when cooled to — 20 ° 

 or below, is solidifies into a crystalline mass which does not melt 

 below -(- n°; soluble in about an equal volume alcohol, and in about 

 30 volumes 70 per cent, alcohol. 



*) The data of the specific gravity approximately correspond to those deter- 

 mined for 15 : 1,105 to 1,107; at 2 5° tne specific gravity varies between 1,098 

 and 1,100 (comp. table). 



Sandalwood Oil, East Indian {Oleum santali). Faintly yellow; 

 C125 0,965 to 0,975*); «j)25 — 16 to — 20 ; santalol-content not 

 below 9O°/ 2 ); soluble in 5 vol. 70 per cent, alcohol. 



*) The upper limit of value is too low, it should be 0,980 (comp. table). 



2 ) It is to be regretted that the Pharmacopoeia bases its calculation of santalol 

 on the formula C15H26O. We have already repeatedly pointed out that according 

 to recent investigations the formula C15H24.O is undoubtedly more correct. Comp. 

 Report October 1900, 58, and the present Report p. 60. The lowest content of 

 90 °/ mentioned above, and based upon C15H26O, corresponds to a minimum of 

 89,2 °/ calculated on C 15 H 24 0. 



Sassafras Oil (Oleum sassafras). Yellow or reddish yellow; 

 d25o 1,065 to I >°75 1 ); a r>25° n ot above -f-4 ; soluble in every pro- 

 portion in 90 per cent, alcohol 2 ). 



*) For the lower limit of value, 1,063 I s more suitable (comp. table). 



2 ) Not every oil answers this requirement. We have again recently found in 

 one of our own distillates, that 1 to 2 vol. 90 per cent, alcohol are required to 

 dissolve 1 vol. sassafras oil; this observation agrees with those repeatedly made 

 with good commercial oils. Comp. also the present Report p. 61. 



Savin Oil (Oleum sabince). Colourless or yellowish; d25o 0,903 

 to 0,923; a D25°-{-40 to -[-60 ; soluble in about 0,5 volumes and 

 more 90 per cent, alcohol. 



Spearmint Oil (Oleum menthce, viridis). Colourless, yellow, or 

 greenish yellow; d 2 5o 0,914 to 0,934; «B25° — 35 to — 4-8°; with an 

 equal volume 80 per cent, alcohol it forms a clear solution which 

 becomes cloudy when further diluted. 



Sweet Orange Oil (Oleum aurantii corticis). Faintly yellow 1 ); 

 d 2 5o 0,842 to 0,846; «D25° not below -f~95° 2 )- 



1 ) The colour of orange oil is yellow to yellow-brown. 



2 ) Calculated for 20 , the rotation is -\-^°\ we have observed as lowest value 

 at 20 + 95 30'. 



