ON A NEW CLASS OE ALCOHOLS. 
571 
account of the physical properties of the different terms of this series ; nevertheless our 
experiments prove the existence in the allyl-series of four compounds analogous to the 
four bases of the ethyl-series. 
Iodide of Tetrallylarsonium. 
Iodide of allyl attacks arsenide of potassium, but far less energetically than iodide of 
ethyl ; several liquid compounds, of very fetid odour, are produced, the boiling-points of 
which, however, extend over so considerable a range of the scale, that we had to abandon 
our desire of studying them. At the same time a solid crystalline body is formed which 
is obviously iodide of tetrallylammonium, in which the nitrogen is replaced by arsenic, 
4(C«H,)AsI. 
On re\iewing the preceding results, it is obvious that propylene, a homologue of' 
ethylene, is susceptible of furnishing a mono-acid alcohol and its derivatives, which 
bears to ethylene the same relation that is observed between methyl-alcohol and marsh- 
gas, or between benzoic alcohol and toluol, the analogue of marsh-gas among the deri- 
vatives of the aromatic acids. The hydrocarbons homologous with, and analogous to 
marsh-gas, the homologues of ethylene, and indeed probably a very considerable 
number of other similarly constituted hydrocarbons, may be regarded as starting-points 
for the preparation of mono-acid alcohols and their derivatives. All these alcohols are 
formed by the fixation of two equivalents of oxygen, which oxidation, however, cannot 
yet be effected directly, but is accomplished by a series of substitution-processes. 
Marsh-gas. Methyl-alcohol. 
C..H, + 0,=C,.H.0„ 
Toluol. Benzoyl- alcohol. 
C«H, + 0.=:C,H.O,. 
Propylene. 
Ally 1-alcohol. 
Olefiant gas and its homologues are capable of furnishing mono-acid alcohols by another 
reaction, which has not yet been applied to the series of bodies homologous with marsh- 
gas. In fact, we have learnt by the researches of M. Beethelot, that olefiant gas and 
its homologues are capable of being transformed into alcohols by the absorption of two 
equivalents of water ; olefiant gas furnishes by this reaction ordinary alcohol ; and 
propylene, propylic alcohol ; thus — 
Q H, + 2H0 = C,H6 O, 
' 2 ? 
Ethylene. 
c 
Propylene. 
Ethylic alcohol. 
eH6 + 2H0 = CaH3 0,. 
-y-- 
Propylic alcohol. 
