Ts z ais A = re is i : 1OT 0 “ & eS a 85 
are Seats nabs At eer : eee 
e tarze caauae to ‘cover ie radieemente of aE Caden: mining industry, but - that 
‘there will be some excess available for export. 
e ‘Vz. Pigoulevsky") determined the constants of a range of Russian essential oils, 
‘ as follows: See ; 
: ~ Sweet basil Be sed aes Bee te — 15.00° 
tanh ofse ec<, ¢ F dD9101: -falg > 22799 
eke Ole et | et Oded [ae 0 eO™ 
. ‘Rosemary oil . . eS Re das 0.8878; [@]p — 0.08° 
oa PIER Oil of Salvia aes eT, d= 0.8808; [a], — 16.20° 
a : : Hyssop oil . Jo... BE 0.9349; [a] — 22.59° 
the Hn did not find any new constituents in them. . 
Ati is not to be seen oe the HES CUSSION in what part of Ae the ee were oe . 
Analytical Notes. o 
We wish to direct the attention of our reader to. an ‘adulterant which recently has 
a Hound: wide-spread employment and has turned out a true curse in’ ‘the - essential oil 
f trade. We mean the dimethyl ester of phthalic acid, dimethyl phthalate, which originally 
_was a mere perfume base, but nowadays is used for adulterations to an extent wholly 
“ur nexpected. It is added ‘indiscriminately to every oil, ‘regardless of the necessity of 
“improving’ ’ or not the ester content, and the adulterators add it in amounts as are 
Revit. astounding. A sad proof how the war and its ponscapences have upset com- 
mercial ethics. y 
a: Generally, it is easy to datect the presence of this ester, Paidcialiy: when it AS Ae 
question of stronger adulteration. Rise in the specific gravity and, above all, in the 
“ester value are the strongest ‘symptoms for its presence. 
We have discussed, in the present Report, the orollanane: oils ‘and ‘preparations 
“adulterated with dimethyl phthalate: - = . me 
4 2 _ Anethole Beige eh Le ee, 63 ae Fe ianiiod Oil, Ceylon p. 18. 
Se Bergamot Oil . . . p. 26 dn CORON, isu) re. ei PO 
mee Caraway Oil. pid |, Lavender Oil. eee \pt oe 
: Sassi Olle ed pr le Peppermint Oil. . . p. 39 
Colour. reactions are only of minor imiportance when testing essential oils, and justly 
since on the whole they are of no use whatever for judging the purity of these 
a p Etocés: Utz?) has compiled those reactions which may in some cases be of use, 
taking especially regard of recent publications. Since we have occasionally referred 
to these, we content ourselves with mentioning the publication. 
2 i The aination of essential oil in non-alcoholic flavouring extracts. — There has ben 
appearing for some years on the American market a variety of so-called non-alcoholic 
il. avouring extracts which consist essentially of an emulsion of the respective essential | 
‘oils in some gum mucilage. Glycerol is often present. In order to determine the 
amount of essential oil present, especially in lemon, orange, almond, anise, and 
a y. Totinn. TUBS. Shue. chem. Boe) 48 (1916), 1047; Bull. Soc: chim. IV. 28 (1918), Zp 2) Deutsche Parf- 
g. 5 (1919), 100. — SPP : fe 
