86 Report of Schimmel § Co. 1922. 



stipulated, this innovation is of hardly any use. In the subsequent discussion of the 

 details, we have made up for this omission. 



No new essential oil has been admitted; cajuput oil has been struck out. 



In discussing the separate articles we follow the text of the pharmacopoeia. 



Anise Oil (Essenza di anicej. — Colourless or yellowish; d 20 o 0.980 to 0.990; a D to 

 the left 1 ); congeals on chilling to a crystalline mass which begins to melt at 15° and 

 liquefies completely between 19 to 20 O2 ); soluble in 2 to 3 vols, of 90 per cent, alcohol. 

 Test for phenols with ferric chloride 3 ). 



x ) The lasvorotation amounts to — 2°. 



2 ) Solidification must often be brought about by inoculating the chilled oil with some solid anise oil or 

 anethole. Good quality oil begins to melt again above 17°. In case of careless storing, or after repeated 

 melting the solidification point decreases constantly and the density increases. Comp. Report October 1904,38. 



3 ) This test is superfluous, since it traces a sophistication never observed with anise oil. 



Cade Oil. — See Juniper Oil, empyreumatic. 



Camphor (Canfora). — White, crystalline, translucent mass; disoO.993 1 ); m.p.l79° 2 ); 

 burns with a sooty flame; volatile already at ordinary temperature; hardly soluble in 

 water (1 : 1200), readily in alcohol, ether, chloroform, acetic acid, fatty and essential oils. 

 0.1 g camphor must volatilise without leaving a residue; test for chlorine. 



Natural camphor is optically active, synthetic inactive 3 ). 



x ) This statement is quite useless, the more so as nothing is stated as to how this constant is determined. 

 The value given is but only an approximate one. 



2 ) In the 3 rd edition the melting point was correctly given as 175°. 



3 ) Under certain conditions, also the synthetic preparation is active; comp. Report October 1910, 197. 



Cassia Oil. — See Cinnamon Oil. 



Cedro Oil (Essenza di cedro 1 )). — Greenish-yellow^ the oil obtained by distillation 

 being colourless 2 ); di B o 0.857 to 0.861; « D strongly to the right 3 ); very sparingly soluble 

 in water, soluble in about 5 parts of 90 per cent, alcohol 4 ) and in every proportion in 

 absolute alcohol. 



*) Form the specific gravity required it follows that lemon oil (essenza di limone) is meant, since the 

 various cedro oils (which are no articles of commerce) are partly heavier, partly lighter than stated above. 

 Compare Gildemeister and Hoffmann, The Volatile Oils, 2 nd edition, vol. Ill, p. 77. 



2 ) Lemon oil is usually light yellow. Oils obtained by ordinary distillation are inferior and of no 

 keeping quality. . 



3 ) The rotation amounts generally to -f- 57 and -f- 61 °, oils occurring with higher or lower rotations. These data 

 pertain to a temperature of 20°, this being important on account of the change of rotation with the temperature. 



*) The solution, effected by 6 to 8 vols, of 90 per cent, alcohol, is often turbid due to the presence of 

 mucous or vegetable wax-like substances. 



Chamomile Oil (Essenza di camomila comune). — Blue, turning brown, 1 ) when ex- 

 posed to the air, or when in contact with alcoholic soda solution. di 5 o 0.925 to 0.945; 

 Roman chamomile Oil 2 ) having d 15 o 0.905 to 0.915; soluble in 8 parts of 90 per cent, 

 alcohol, opalescence occurring sometimes 3 ); on chilling down to 0° it gets tough but 

 does not solidify 4 ). 



*) Intermediately, the oil turns green. 



2 ) It would have been better to quote this oil separately, as it behaves quite differently from ordinary 

 chamomile oil. In discussing the other details of this paragraph, we take only the latter oil into consideration. 

 8 ) In consequence of its high content of paraffins, the oil gives but turbid mixtures with 90 per cent, alcohol. 

 *) This statement is incorrect, chamomile oil being, at 9°, a comparatively solid mass. 



Cinnamon Oil (Cassia and Ceylon Cinnamon Oils) (Essenza della cannella). — 

 Colourless or light yellow, turning gradually into yellow or brown 1 ); soluble in 3 parts 

 of 70 per cent, alcohol 2 ); d 15 o with Ceylon oil 1.024 to 1.040; « D to the left 8 ); di 5 o with 



