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“SCIENTIFIC ; “AND OTHER NOTES ON’ ESSENTIAL OWS hi 55 
at oom 6°. The crude prance obtained is particularly pure; as by- “product, trans-terpine 
may occur also here. 
Transformation of terpine. bydento into terpineol by splitting off water is effected 
best by action of 0.5 per cent. oxalic acid. The formation of terpineol from pinene by 
aid of formic acid passes off so favourably that the author expects this process to 
_ work on a commercial scale. A nearly quantitative yield of terpine hydrate from 
_terpineol was effected by treatment with 5 Dae of 40 per cent. sulphuric acid with 
‘Stirring and ice-cooling. 
3 _ Aschan’s experiments proved that terpine hydrate may be prepared, in satisfactory 
yield, from the fraction b.p. 159 to 167° of Finnish turpentine oil, containing the 
_ pinene-like terpenes. 7 
= In addition, Aschan') makes some statements as to rise higher-boiling components 
_of Finnish turpentine oil. In a sample of the oil as well as in a commercial distillate 
‘(both prepared from Pinus sylvestris) he found a terpene alcohol and cadinene, where, 
however, the question remains still to settle whether cadinene occurs as such in the 
fraction b.p. 125 to 130° (9 mm.), or whether it was formed from another sesquiterpene 
_ on addition of hydrogen chloride gas. 
- He obtained furthermore from Finnish turpentine (oi, obtained from the tar distilleries 
as well as from distilling the resinous products, fractions boiling from 210 to 220° 
and about 260° and consisting probably of a terpene alcohol and a sesquiterpene. 
_ The same fractions were found in a by-product resulting from the preparation of pine 
rosin. Aschan obtained an unsaturated terpene alcohol CipH12OH, which was not identical 
with ordinary terpineol and probably was a mixture of terpineol with other terpene 
_ alcohols. In addition, he isolated a sesquiterpene C1sHes (b. p. 260 to 263° [760 mm.]; 
_ d= 0.9187) yielding cadinene hydrochloride (m.p. 117 to 118°) with hydrogen chloride,’ 
which proyed to be unsaturated owing to its behaviour towards permanganate solution 
or bromine. Since it boiled 10° lower than cadinene, it was evidently not identical 
_with that terpene. | 3 : ! | 
Finally, Aschan mentions a sesquiterpene fraction from the volatile constituents of 
pine rosin; they contained a new body, the dihydrochloride CisHoeCl, of which melted 
- at 85 to 86°. It is possibly the case of a bicyclic sesquiterpene related to cadinene.. 
’ American pine tar oil yields, on distilling with steam, according to E. J. Millard), 
about 40 per cent. of a brown oil (Ol. picis rectificatum) (40.920) smelling of tar and 
3 showing weak acid reaction. On treatment with soda solution and by following recti- 
fication a light oil (d 0.881) has obtained which was nearly colourless and smelled 
re ag avail of be ee oil. 
e. Fan the endeavours of the resent time notice must be taken of the attempts 
to obtain home-grown pine-resin in Germany, facts to which we referred repeatedly). 
_. For the present it is impossible to say which of the various sources for resin 
_ ftecommended by the authors mentioned will prove to be profitable. In this connection 
we mention a publication of J. E. Brauer-Tuchorze*), where the preparation of oil and 
rosin from pine wood is described. Since, however, the work contains nothing new 
‘and furthermore it is not quite clear to which species of pines the work Pale se we | 
content ourselves with this note. 
1) Itidem 77 (1918), No. 2; Finska Kemistsamfundete Meddelanden 1916, 1918; Chem. Zentralbl. 1919, I. 
: e 285. — %) Pharmaceutical Journ. 100 (1918), 28; Chem. Zentralbl. 1918, II. 37. — *%) Comp. inter alia our 
icht (German edition) 1918, 50. — 4) Seife 8 (1918), 182. 
f 
