— 112 — 



chloride 103 °, of the nitrolpiperidine 118 to 119°, and of the nitrolbenzyl- 

 amine, 122 to 123°. In addition, the oil contained a very large proportion 

 of cineol, which was identified from the additive compound with phosphoric 

 acid and with resorcinol (m. p. 80°). In the fraction boiling between 185 

 and 195°, Dorronsoro found 1-linalool, which he identified by oxidation 

 into citral and conversion of the latter into its /?-naphthocinchoninic acid 

 compound (m. p. 197°). 



In conclusion, the author supplies the following table showing the 

 constitution of the oil: — 



d-a-Pinene 7 to 8%, 



Cineol 64 to 72%, 



Phenols under 0,1%, 



Ketones? . „ 0,1%, 



Esters (linalyl acetate) . 4,44 to 6,47%, 

 Free alcohol 8,2 to 14,1 %. 



Turpentine Oil. Vezes, in a pamphlet entitled "Sur la Definition de 

 l'essence de terebenthine commercialement pur'* 1 ) criticises the definition 

 of commercial turpentine oil wich is currently supposed to have been 

 adopted by the second White Cross Congress held in Paris from October 

 18 th to 23 rd 1909 and which, owing to some mistake, has found its way, 

 as drafted by a Paris merchant, into the proofs of the Proceedings of 

 the Congress 2 ). Under authority of the Executive Committee of the Congress, 

 Vezes, after criticising the partly erroneous and partly insufficient re- 

 quirements laid down in the present definition, conclusively and accurately 

 formulates the requirements which turpentine oil should answer, as follows: 

 Turpentine oil is the exclusive product of the aqueous distillation 

 (distillation with water or non-superheated steam) of the turpentine 

 derived from various species of Finns. It is a colourless, often 

 slightly yellowish or greenish, liquid, very mobile, with a characteristic 

 odour. Under a normal pressure of 760 mm., the oil begins to boil 

 between 152 and 156°; at least 80 p. c. by weight must have passed 

 over at 164°. The oil should be neutral or give only a faint acid 

 reaction; the permissible acid-content, estimated with phenolphthalein 

 as an indicator, must not exceed 1,5 g. 3 ) pure potassium hydrate (KOH) 

 for every kilogram of oil. The oil must also be free from mineral 



*) Bordeaux 1910, Feret $ Fils. From a copy kindly sent to us. 



2 ) In our review of the decisions of the Congress (Report April 1910, 141) we did not refer 

 to turpentine oil, because, as we afterwards discovered, this oil was not classified among the 

 essential oils but among the chemical products (Produits chimiques) where we could not 

 suspect it to be included.. 



3 ) V&zes had formerly fixed a maximal acidity of 1,0 g. KOH per liter. The present in- 

 creased limit has been inserted at the wish of the French Turpentine Syndicate. But the 

 present maximum does not differ from the former by a full 0,5 because VSzes has now taken 

 the kilogram instead of the liter of oil as his basis, as already suggested by us. 



