70 THE ALUMNI JOURNAL 



300 grams of linaltiol were dissolved in an equal weight of toluene. 

 The solution, heated on a water-bath, is caused to absorl) 75 grams 

 of hydrogen chloride, or an excess of 4 grams over the theoretical 

 (juantity, corresponding to the quantity dissolved in the water 

 formed in the reaction. This quantity of water was 37 grams, con- 

 taining 3.6 grams of hydrochloric acid. In reality, then 33.4 grams 

 of water were precipitated, the theoretical quantity being 35 grams. 

 Thus almost the theoretical quantity was obtained. 



Rectification yielded the following fractions, under a pressure of 

 6 mm. 



1. . . . . . 76.5 grams at 7o°-93° C. 



2. .... . 24.7 ^ " " 93°-95° 



3 170.5 " " 95°-96° 



4 24.3 " " Residue 



In the head fractions, a small quantity of a hydrocarbon CioHi^ 

 is found, which is probably the anhydroUnalool or anhydro gcraniol of 

 Semmler. As a matter of fact, at the time of the first distillation 

 there is a slight decom]:)Osition with splitting ofif of hydrochloric 

 acid. 



By a fresh rectification, there were obtained 124 grams of a 

 product boiling at 95°-9(^° C. under 6 mm. pressure, which gave on 

 analysis the following figures : 



Calculated Found 



for Cj.^Hi^Cl 



Chlorine, per cent 20.65 20.52 



Its constants were as follows : 



B. P. (6 mm.) .... 95-06'^ C. 



D,o 0.9341 



[a^o ....... +10.50 



< 1.4813 



Molecular refraction 



calculated. . . 52.28 

 found .... 52.5 



This molecular refraction is a first proof of the linear structure of 

 this compound. 



We have at the present time under investigation the action of 

 hydrogen chloride on the dextro-linalool of oil of coriander, under 

 the same conditions. 



To be continued. 



