— 93 — 



Almond oil, bitter [Oleum amygdalarum aethereum). Co- 

 lourless or yellowish; 0450 1,052 to 1,05s 1 ); soluble in an equal part 

 of alcohol, and also in about 200 parts of water. Test for hydro- 

 cyanic acid, and for the absence of nitrobenzene and chlorinated 

 products. 2 ) 



*) The limits of value are taken too narrow, the specific gravity lies between 

 1,045 and 1.070 (*5°)- 



2 ) With regard to the test for chlorinated compounds, comp. Report October 

 1904, 8. 



Amber Oil, rect. [Oleum succini). Bright yellow 1 ); mobile; 

 diso 0,925 to 0,930 2 ); soluble in 4 to 4,5 vol. 95 per cent, alcohol. 



*) The oil is also frequently brownish yellow or olive-coloured. 

 2 ) "We have in recent times observed in our own distillates even higher specific 

 gravities (up to 0,935). 



Balm Oil (Oleum melzssae) 1 ). Colourless or pale yellowish; feeble 

 acid reaction; d^o 0,875 to 0*920; soluble in 2 to 3 parts alcohol. 



*) Balm oil is not a commercial product; the commercial oil is not a pure 

 distillate of melissa, but either a lemon or citronella oil distilled over melissa herb, 

 or only a fractionated citronella oil. 



Bergamot Oil (Oleum bergamottae). Greenish-yellow to green 1 ); 

 d^o 0,883 2 ) to 0,886; soluble in every proportion in alcohol 3 ). 



*) Bergamot oil has also sometimes the colour of honey. 



2 ) The lower limit of value should be reduced to 0,881. 



3 ) For dissolving 1 vol. bergamot oil, up to 1 / 2 vol. 90 per cent, alcohol is 

 often required. 



Cajeput Oil (Oleum cajeputi). Colourless to yellowish 1 ); di 5 oo,9i5 

 to 0,930; soluble in every proportion in alcohol; cineol reaction with 

 iodine, and test for absence of copper. 



*) From this as well as from the copper test, it is clear that the rectified oil 

 is required, which, however, should be described correctly as ol. cajeputi rectificatum\ 

 the ordinary commercial product has a green colour owing to traces of copper. 



Chamomile Oil (Oleum chamomillae aethereum). Fairly viscid, 

 at low temperature almost like butter; dark blue 1 ); d^o 0,930 2 ) to 

 0,940; soluble in 8 to 10 parts alcohol 3 ); the solution does not 

 redden blue litmus paper. 



*) Under the influence of light and air the colour changes gradually into green 

 to brown. 



2 ) The lower limit of value is given too high, and should be 0,925. 



3 ) Owing to its high content of paraffin the oil gives only cloudy mixtures 

 with 90 per cent, alcohol. 



Cinnamon Oil (Oleum cinnamomi zeylanici). Yellow; somewhat 

 viscid; d^o 1,024 to 1,040; soluble in every proportion in alcohol. 



Eucalyptol (Oleum eucalypti) 1 ). Colourless: di 5 o 0,930 2 ); b. p. 176 

 to 1 77 ; when cooled considerably, solidifying into colourless crystals, 



