46 REPORT OF SCHIMMEL & Co. OCTOBER 1915. 
Camphor (Camphora). © dis.so about 0.995; m. p. about 175°; soluble in about 
700 parts of water, in 1 part of 90 p.c. alcohol, in 0.25 parts of chloroform and in 
4 parts of olive oil; very soluble in ether; burns readily with a bright smoky flame. 
It volatilises even at ordinary temperatures and sublimes without a residue when heated. 
It forms a liquid when triturated with chloral hydrate, menthol, phenol, thymol, 8c.; a 
solution of 5 g. in sufficient 90 p.c. alcohol to produce 20 cc., exhibits at 15.5° an 
optical rotation of about ++ 10° (distinction from synthetic camphor). 
Oil of Caraway (Oleum Carui). Colourless or pale yellow; di5s.50 0.910 to 0.920; 
ay +75 to + 82°); nposo 1.485 to 1.497; soluble in 1 part of 90 p.c. alcohol. and in 
10 parts of a mixture of equal volumes of 90 and of 70 p.c. alcohol; when fractionally 
distilled, not less than 50 p.c. distils above 200°. 
1) We have repeatedly met with caraway oils of a gravity of 0.910, which rotated between 70 and 75°. 
Oil of Chamomile (Olewn Anthemidis). Blue when freshly distilled, but gradually 
becoming greenish or brownish-yellow under the influence of light and air; dis.50 0.905 to 
0.915; a) —1') to + 3°; np»so about 1.445; soluble in less than 1 part of 90 p.c. alcohol. 
1) In oils of our own drawing we have observed laevo-rotation down to — 2°30’. Report April 1915, 39. 
Oil of Cinnamon (Olewm Cinnamomi). Yellow when freshly distilled, gradually 
becoming reddish; dis.50 1.000 to 1.030'); a) —0,5 to —1°; npsso 1.565 to 1.580; soluble 
in 3 to 4 parts of 70 p.c. alcohol; one drop dissolved in 5 cc.*) of 90 p.c. alcohol 
assumes a pale green, but not a blue or brown coloration, on the addition of 1 drop 
of ferric chloride (absence of Cinnamon leaf oil and Cassia oil); contains from 55 to 
65 p.c. of cinnamic aldehyde*) (determined with neutral sodium sulphite). 
1) According to our observations with oils of our own drawing, specific gravity ranges between 1.023 and 1.040. 
8) The desired reaction will only take place when 5 drops, and not 5 cc., of alcohol are taken. 
8) In oils of our own drawing we have always observed an aldehyde content of 65 to 76p.c. A specific 
gravity below 1.023 and an aldehyde content of less than 65 p.c. points to distillation having been carried 
out in an unsuitable way, and with unsuitable plant. We have touched upon this subject exhaustively in 
our Report October 1910 (p. 35) and cannot help expressing our surprise at the British Pharmacopoeia having 
utterly ignored our statements; in fact it makes it a point to exclude from the B. P. pure oils such as we obtain 
here from our own distillation. Such an astounding lack of impartiality on the part of the Pharmacopoeia 
commission speaks volumes for the spirit by which its deliberations were guided. 
We gather from an English contemporary [Perfwm. Record 6 (1915) 93] that serious difficulties have been 
encountered in England in obtaining cinnamon oils of the required low specific gravity and showing the correct 
solubility. On this occasion it is once again pointed out that the heavier cinnamon oils of continental make 
are probably adulterated with cinnamic aldehyde! As we are the principal manufacturers of this article, we — 
must resent such an unheard-of calumny as far as our own oil is concerned, a calumny which is founded 
on nothing but ignorance or a biased mind, or both. 
Oil of Cloves (Olewm Caryophylli). Colourless or pale yellow when fresh, becoming 
darker with age; dis.50 1.047 to 1.065; np» 1.528 to 1.540*); soluble in 3 parts of 
70 p.c. alcohol, the solution yielding a blue colour with ferric chloride; eugenol content 
not less than 85 p.c. (test with a 5 p.c. solution of potassium hydroxide). 
1) In the introduction to this chapter we gave vent to our surprise at the rotation having been left 
unconsidered with clove oil. On the other hand, the refractive index could have been ignored. Clove oil 
has a slight laevo-rotation, @p up to —1°35’. 
Oil of Copaiba (Olewm Copaibae). Colourless or pale yellow; dis.50 0.896 to 0.910; : 
a) —7 to — 35°; npss0 1.494 to 1.500; distils between 250 to 275°; test for gurjun oil 
(a solution of 1 cc. of oil in 5c. of glacial acetic acid does not develop more than . 
a faint violet coloration on the addition of 4 drops of nitric acid), and for oil of 
