Document ID: EPA-HQ-OPP-2004-0301-0005
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2004-09-10T04:00Z

Page
1
of
2
PRODUCT
CHEMISTRY
CHAPTER
A.
Chemical
Overview
Phenol
is
a
constituent
of
coal
tar,
and
is
formed
during
the
natural
decomposition
of
organic
materials.
The
major
part
of
phenol
present
in
the
environment,
however,
is
of
anthropogenic
origin.
Production
and
use
of
phenol
and
its
products,
especially
phenolic
resins
and
caprolactam,
exhaust
gases,
residential
wood
burning
and
cigarette
smoke
are
potential
sources.

B.
Chemical
Identification
°
Name:
Phenol
°
Chemical
Family:
Phenols
°
Synonyms:
Phenol;
Carbolic
Acid;
Hydroxybenzene
°
CAS
Number:
108­
95­
2
°
Molecular
Formula:
C
6
H
6
0
C.
Physical/
Chemical
Properties
The
following
characteristics
have
been
reported
for
phenol:
Technical
Grade
Active
Ingredient
(
TGAI):

°
Molecular
Weight:
94.11
°
Color:
Colorless
to
light
pink
°
Physical
State:
Crystalline
solid
°
Specific
gravity:
1.07
at
20oC
°
Acid
Dissociation
Constant
(
pK
a):
9.9
at
25oC
°
Dissociation
Constant
in
water
(
K
a)
1.28
×
10­
10
°
pH:
Mildly
acidic
°
Stability:
Stable
at
normal
conditions
°
Melting
point:
43.0oC
40.9oC
(
ultra
pure
material)
°
Boiling
point
181.8oC
at
760
mm
Hg
°
Water
Solubility:
67g/
L
in
water
at
16oC
°
Log
K
OW
1.46
at
25oC
°
Vapor
Pressure:
0.341mm
of
Hg
at
25oC
2.48mm
of
Hg
at
50oC
41.3mm
of
Hg
at
100o
C
°
Relative
Vapor
Density
(
air
=
1):
3.24
°
Saturation
concentration
in
air:
0.77g/
m3
at
20oC
Page
2
of
2
A.
Chemical
Overview
B.
Chemical
Identification
°
Name:
Sodium
Phenate
°
Chemical
Family:
Phenols
°
Synonyms:
Sodium
Phenate;
Sodium
Phenolate;
Phenol,
Sodium
Salt
°
CAS
Number:
139­
02­
6
°
Molecular
Formula:
C
6
H
6
0Na
C.
Physical/
Chemical
Properties
The
following
characteristics
have
been
reported
for
sodium
phenate:
Technical
Grade
Active
Ingredient
(
TGAI):

°
Molecular
Weight:
116.10
°
Color:
White
to
reddish
°
Physical
State:
Crystalline
needles
or
rods
°
pH:
Alkaline
in
aqueous
solution
°
Stability:
stable
at
normal
conditions
°
Solubility:
Highly
soluble
in
water.