Fundamental Organic Chemistry

3-Chloroform test :
1ml of phenol dissolved in excess 20%
NaOH +1ml of chloroform CHCl 3 then heat
in water bath .
4-Phthalein test:
In dry test tube add 0.5gm of phenol
+ 0.5 gm of phthalic anhydride +2drops of
conc.H 2 SO 4 , and gently fuse together allow
to cool , and then add 30% NaOH solution in
excess
-Ve
Deep pink color
Compound is
Phenol
Specific test for
phenol (37).
O H
O H
O H
O H
O
O
O
P h th a lic a n h yd rid e
H 2
S O 4
C o n c.
F u sio n
N a O H
O
O
P h e n o lp h th a le in in a c id ic m e d iu m
O H
O
O N a
O
P h e n o lp h th a le in in b a s ic m e d iu m
…..(37)
71