A Manual of the Chemistry of the Carbon Compounds

234 THE CHEMISTRY OF
ffeptene or HcptykM C7HU occurs in the same oils in which hexene
is found, and has been obtained from secondary heptyl chloride. The
same hydrocarbon is formed by acting on cenanthaldehyde with
phosphorus pentachloride and decomposing the omanthidme chloride
O7HuCl2 thus formed with sodium. It boils at 100°.
Octene or Octylem CgH,8, a liquid boiling at 125°, is found together
with its lower homologues, and is readily obtained by distilling
methyl-hexyl carbinol with zinc chloride. Octene glycol CgH^OH^
is insoluble in water and boils afc 235° to 240°.
Diamylene O^H^—To prepare this hydrocarbon one volume of
amylene is shaken with two volumes of a mixture, consisting of two
volumes of concentrated sulphuric acid and one volume of water, in
stoppered cylinders which are surrounded by ice-cold water. It boils
at 160°. On heating it with a solution of potassium dichromate in
dilute sulphuric acid, it is oxidized to diamylene oxide C'^HmO, a
mobile light liquid boiling between 180" to 190°, and possessing a
strong smell like camphor. On further oxidation it yields carbon
dioxide, acetio acid, and amethenic add CjII^O^anoily liquid, which
is isomeric with cenanthylic acid, from which it differs however by
exhibiting only very feeble acid properties.
Cetene C10H32 is produced by the distillation of cetyl alcohol with
phosphorus peutoxide, and also by the destructive distillation of
spermaceti. It is an oily liquid, boiling at 275°. Cetene dibromide
CujHgjBr. is a heavy non-volatile liquid. W