— log — 
they have succeeded in producing nerol now absolutely free from 
geraniol, and give the following constants for this alcohol: 
d^50 = 0,8813; ttj) + 0°; boiling point 226° to 227° at 755 mm; 
125° at 25 mm. 
This compound absorbs four atoms bromine and has the com- 
position C^oH^gO. The melting point of the diphenyl urethane was 
found at 52° to 53°, whilst Hesse and Zeitschel gave 73^ to 75°. 
With regard to the manner in which v. So den and Treff have 
obtained nerol free from geraniol, nothing is stated on account of 
patent rights. On the occasion of our experiments with nerol^) we 
showed that the melting point of the diphenyl urethane mentioned 
by Hesse and Zeitschel was probably not correct; for we found 
that the urethane produced according to Hesse and Zeitschel was 
a mixture, whose melting point lying about 60° could be raised by 
repeated recrystallisation from petroleum ether to 81°, the melting 
point of the diphenyl urethane of geraniol. This supposition has 
therefore been proved to have been justified. 
Citronellol. L. Bouveault^) designates as rhodinamine a base 
^10 -^19 -^^2 which he obtained on reducing geranium acid nitrile 
with sodium and alcohol. It is a colourless liquid with a fish-like 
odour, which also reminds faintly of roses, and which boils at 105° 
(15 mm pressure). The specific gravity d^ = 0,839. The salts of 
this base dissolve very readily in water, and have a soap-like appearance. 
When oxalic acid ester is allowed to act on the base, a uniform 
oxamide (CO • Ci()H2qN)2, melting at 96°, is formed. The constitution 
of rhodinamine can only be as follows: 
CH3 
I 
\C= CH — CH, — CHg — CH — CHg — CHg— NH^, 
CH3/ 
that is to say a citronellol or rhodinol whose hydroxyl-group has been 
substituted by an amide-group. When an ethereal solution of the 
amine with caustic potash was dried, rhodinamine was converted with 
absorption one molecule of water into the compound C^q H23 NO, which 
must be regarded as a tertiary amino alcohol: 
CH3 
CH3. 
>C(OH) . CH2 . CH2 . CHg . CH. CH, . CH^ -NH^. 
CH3/ 
Its boiling point lies at 140° (15 mm pressure); d^ = 0,910. 
^) Report April 1903, 63. 
2) Bull. Soc. chim. III. 29 (1903), 1046. 
