A Manual of the Chemistry of the Carbon Compounds

THE CARBON COMPOUNDS. 207
CHS
CH + H } =
CH3
CH CH3
a
Propene Bichloride C8H8Clg, a colourless liquid smelling like ethene
chloride, is produced by the direct union of propene and chlorine, as
•well as by the aotion of ohlorine upon propane or propyl chloride. It
boils at 96°.
Propaie Dibromide C3H6Br2 is a heavy colourless liquid boiling at
142°, which is generally used for preparing other propene compounds.
Propene Glycol C8H,(OH)a is obtained from propene dibromide by
a reaction similar to that by which ethene dibromide is converted into
ethehe glycol.
It is a thick liquid having a sweet taste, and boiling at 188°. By
the action of hydriodic acid it is reduced to secondary propyl
iodide.
On heating a saturated solution of hydrochloric acid gas in propene
( Cl
glycol, propene chlorhydrate CSHO-J QTJ is produced, a liquid boiling at
127°. By the action of caustb potash it is converted into propene
oxide G^HgO, a liquid soluble in water and boiling at 35°. It combines
with nascent hydrogen to form secondary propyl alcohol:—
CH, CH3
CH. + H2 = CH.0H
II > |
CH/ CH3
I80MERIDES OP PROPENE COMPOUNDS,
Trimethenc Dibrvmide CaHaBr2.—When allyl bromide C.H6Br, a
body belonging to the non-saturated compounds, is treated with hydrolaomic
acid, two isomeric dibromides are found. That which is
obtained in a small quantity consists of common propene dibromide,
formed according to the following reaction :—
CH, CHS
» ' H) I
CHJr
The second bromide, which is always present in a larger quantity,
is trimethene dibromide:—
C