y 
0.925; aeie? in 4 vols. Ais 70 per cen al 
- Eucalyptole content, not less than 70 per cel te 
1) The oil has often also a pale greenish colour. AZ ¥ Bik 
Hes <i YD As to the assay of eucalyptole by means of arsenic acid, compare our has or Oc ct 
Eugenol (Eugenol). - — coe or pale” yellow, ‘turning dar 
‘exposure to the air. B. p. 250 to 255°; d28 1.064 to 1.070; opt 
ee ue ay) miscible with aleohof, chloroform, nee. ae 
i) This statement is of no importance the refractive index, at 20°, aS betwee 
9 
a0 Oil of Fennel (Olewm Feniculi). — Colourless or r pale yellow vdzgi0- 
| @ +12 to +249; soluble in 8 vols. “80 per cent. alcohol, A Aa 
alcohol; forming a solution neutral to litmus; congealing. point not 
down to 0°). y Penge. i 
Oil of juniper (Oleum Juniperi). — Colourless or faintly. o1 en ‘¢ 
| 0 0:804 to 0.879; a) +0° to — 152; soluble. in n 4. vols. 95 o cent alc 
more than a slight cloudiness. | ibe 
f ‘A Pe: 
ae sb. Oil of Lavender (Oleum Lavandule). — SCalauetees or yellow: lee 2 9.875 | 
—1° to —10°'); soluble in 3 vols. 70 per cent. aieotiels tests for absence of sieaks 
foe of glycerin esters. ‘J Meer 
f 3) The lower limit for the rotation may be —3°. | py tS MS fos 
A ta 
Oil of Lemon dau Timonis). — Pale sal or greenish-yellow; be 
| aieph to a Paration: at 259) \of 55° 207 to: 6920." he 
2) Repeatedly, there has been observed, with otherwise quite’ faultless ee oN a citr, 
as 3.5 per cent. (phenylhydrazine method; compare Report April 1914, 58), so that the figure re 
<> ” would appear to be too high. Furthermore, there should have been’ given an upper ‘limit. for th 
-as owing to the requirement above a sophisticator might easily make an ‘inferior oil: pass. the 
Ba, ee dink a few per cent. of citral. The U.S. Ph. should require of a lemon oil an aldehyde ot 
¥ 4 to 5 per cent. ., calculated as citral, as determined by the phensrorers method. eels 
iy) AY 
Menthol (Menthol). — Colourless, acicular or prismatic crystals; pe 42 to 
slightly soluble in water, very soluble in alcohol, chloroform, ‘ether, 
benzine; freeby soluble in liquid petrolatum, or fixed or volatile oils; 
solution is neutral to asi and is pee? On Beet with b ut a 
A ; 
