

1910 





46571 



tons 



(Engl.) 



15595 



D 



») 



4972 



„ 



»A 



1359 



» 



M 



20503 tons (metr.) 



1989 





M 



— 93 — 



According to British Consular Reports l ) the exports of turpentine 

 products (oil and resin) from Bordeaux and Bayonne, the two principal 

 shipping-ports in the French turpentine district, during the past two years 

 have been as below: — 



Bordeaux 1 909 



Turpentine products 46739 tons (Engl.) 



of which was shipped to U.K. 16557 „ „ 

 including turpentine oil .... 3674 „ „ 



of which was shipped to U. K. 1 256 „ „ 



Bayonne 

 Turpentine products . . . . . 20823 tons (metr.) 

 of which was shipped to U. K. — „ „ 



The Imperial Institute 2 ) in London has examined two samples of Indian 

 turpentine oil from Pinus longifolia (Chir-Pine). The samples gave the 

 following constants: dg| 0,871, « — 0° 45' and dj-ff 0,868, « — 2° 10'. When 

 fractionated, scarcely any of the oil passed over below 165°. A similar 

 behaviour was exhibited by an oil previously examined at the Imperial 

 Institute. The last-named sample consisted to the extent of one-third of 

 1-pinene, and also contained sylvestrene, mixed with other high-boiling 

 terpenes. As stated by us in our last Report, an oil from Pinus longifolia 

 which was examined by us 3 ) was also found to contain a considerable 

 proportion of sylvestrene, as well as a sesquiterpene. 



A method for the estimation of turpentine oil worked out by P. Klason^) 

 is based upon the conversion of the pinene peroxide which is present in this 

 oil with cymene mercaptane, cymene disulphide being formed. As cymene 

 mercaptane can be titrated with decinormal iodine solution (according to 

 the equation 2RSH -f 21 =*= R 2 S 2 + 2HI) it is possible to control the quantity 

 of mercaptane which is used up. For the purposes of this estimation a 

 solution of 5 cc. cymene mercaptane in 100 cc. alcohol is required; this 

 solution is standardised with decinormal iodine solution. Next, 5 cc. of the 

 oil under examination and 5 cc. mercaptane solution are poured into a 

 flask of about 30 cc. capacity. After filling up with alcohol the flask is 

 vigorously shaken and left to stand for 24 hours. As a rule the reaction 

 is completed at the end of this period. The contents of the flask are 

 now diluted with about 100 cc. alcohol and titrated with decinormal iodine 

 solution until a brown colour appears. No starch-solution should be used 

 as an indicator. 



x ) Diplomatic and Consular Reports May 1911, Nr. 4659, p. 14, 26, 40. 

 2 ) Bull. Imp. Inst. 9 (1911), 8. 

 ;{ ) Report April 1911, 116. 

 *) Chem. Ztg. 35 (1911), 537. 



