This filtrate
was then evaporated nearly to dryness, when a small quantity of
six-sided prisms crystallized out, which subsequently were found to be
the hydrate of phenol (C_{6}H_{5}HO)_{2}H_{2}O. Its melting point was
found to be 17.2 deg. C. Further, the crystals already referred to were
dissolved in ether, and then allowed to evaporate, when long colorless
needles were obtained, which, on being placed in a dry test tube and
the tube placed in a water bath kept at 42 deg. C., were found to melt;
and on making a careful combustion analysis of these crystals, the
following composition was obtained:
Carbon 76.6
Hydrogen 6.4
Oxygen 17.0
-----
100.0
This gives C_{6}H_{6}O, which is the formula for phenol.
On dissolving some of these crystals in water (excess) and adding
ferric chloride, a beautiful violet color was imparted to the
solution. To another aqueous solution of the crystals was added
bromine water, and a white precipitate was obtained, consisting of
tribromophenol.
Pages:
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43