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our customers frequently solicit information from us with regard to the 

 probable course of the market. A few large parcels of Tonquin staranise 

 oil have also been offered, but business was impracticable owing to the 

 stiff-necked attitude of the sellers, who to all appearance are still un- 

 willing to believe that the supplies received from Tonquin during the past 

 few years have not been any better as regards quality than are those 

 Chinese brands which have a reputation for reliability. 



In the lowest-boiling fractions derived from a parcel consisting of 

 many tons of staranise oil we have detected the following terpenes: — 



d-a-Pinene 1 ). A fraction (d 15 o 0,8541 ; « D + 24° 31 ') boiling between 155 

 and 158° yielded with nitrosyl chloride a nitrosochloride which melted in 

 the crude state between 101 and 103°. The derivative obtained therefrom 

 by reacting upon it with benzylamine had m. p. 123 to 125°. 



dhtf-Phellandrene 1 ). This hydrocarbon had accumulated by fractionation 

 in a fraction boiling between 171 and 174°, possessing the following 

 physical constants: d 15 o 0,8489, a D + 2°20\ The nitrite obtained from it, 

 when recrystallised from acetone, showed the characteristics stated by 

 Wallach for /?-phellandrene. It melted at 102° and was laevorotatory in 

 a chloroform solution. 



Dipentene and Z-limonene occurred in the fractions boiling at 178° 

 (d 15 o 0,8510; « D — 28° 15'). The first-named body was identified from the 

 tetrabromide, m. p. 124°. From the acetic ester crystallisation liquors we 

 isolated the most easily soluble portions in the form of crystals melting 

 below 100°, which after being purified once more, gave m. p. 102 to 103°. 

 This substance was obviously limonene tetrabromide. Further proof of 

 the presence of dipentene was afforded by the generation of the nitroso- 

 chloride and of the piperidine derivative of the latter (m. p. 153°). 



In addition to the above the first runnings under examination contained 

 considerable quantities of fractions boiling between 163 and 168°, with 

 a marked odour of turpentine. The constants of these fractions were as 

 follow: d 15 o 0,8551, « D + 14°7', n D20 o 1 ,47343. Repeated tests for /?-pinene 

 or sabinene by oxidising with permanganate in alkaline solution only gave 

 negative results. We will not omit to add that each of the above-named 

 terpenes only constituted a fraction of perhaps 0,01 % of the total quantity 

 of the original oil. 



Th. H. Durrans 2 ) has examined a sample of staranise oil which aroused 

 suspicion on account of its low solidifying point (about +13°). In view 

 of the fact that further tests failed to afford positive evidence of adulteration, 



*) We here confirm the statements in our Report of April 1893, p. 62, regarding the 

 occurrence in staranise oil of both these hydrocarbons. 

 2 ) Perfum. and Essent. Oil Record 2 (1911), 60. 



