1
of
5
MEMORANDUM
SUBJECT:
Product
Chemistry
Science
Chapter
for
Dodecylbenzene
Sulfonic
Acid,
C10­
C16
Derivatives
and
Sodium
Salt
To:
Heather
Garvie,
CRM
for
Dodecylbenzene
Sulfonic
Acid
RED
Regulatory
Management
Branch
II
Antimicrobials
Division
(
7510C)

From:
A.
Najm
Shamim,
PhD,
Chemist
Regulatory
Management
Branch
II
Antimicorbials
Division
II
Thru:
Deborah
Smegal,
Risk
Assessor
for
Dodecylbenzenesulfonic
Acid
RED
Health
Effects
Division
And
Mark
Harman,
Chief
Regulatory
Management
Branch
II
Antimicrobials
Division
(
7510C)

DP
Barcode:
323976
REG#:
4006­
26242
2
of
5
A
PRODUCT
CHEMISTRY
SCIENCE
CHAPTER
ON
DODECYLBENZENE
SULFONIC
ACID
FOR
THE
REREGISTRATION
ELIGIBILITY
DECISION
Chemical
Overview:

Dodecylbenzene
Sulfonic
Acid
is
used
as
a
disinfectant
Chemical
Identification
Chemical
Name:
Dodecylbenzene
Sulfonic
Acid,
C10
 
C16
Derivatives
Chemical
Family:
Surfactants
CAS#:
68584­
22­
5
Molecular
Formula:
C16H26O3S
Physical/
Chemical
Properties
Molecular
Wt.:
298.44
Log
KOW:
3.80
MP:
167.7
O
C
BP:
437
o
C
Solubility
in
water:
400
g/
L
(
25
O
C)
a
Vapor
Pressure:
5.1
x
10­
10
mm
Hg
(
25o
C)
Henry
Law
Constant:
2.8
x
10­
11
atm­
m3/
mol
Half
Life
in
Air:
0.79
days
=
9.48
hours
(
measured
against
OH.
Radical
reaction)

a:
source
B.
PRODUCT
CHEMISTRY
SCIENCE
CHAPTER
ON
DODECYLBENZENE
SULFONIC
ACID,
DODECYL:
SODIUM
SALT
Chemical
Overview
Dodecylbenzenesulfonic
Acid,
Sodium
Salt
is
used
as
a
disinfectant
Chemical
Identification
Chemical
Name:
Dodecyl
Benzenesulfonic
Acid,
Sodium
Salt.
Chemical
Family:
Surfactants
CAS#:
25155­
30­
0
Molecular
Formula:
C18H29O3S
Na
Physical/
Chemical
Properties
3
of
5
Molecular
Wt:
348.48
Log
KOW:
1.96
MP:
287.6
o
C
BP:
660
o
C
Vapor
Pressure:
6.02
x
10­
15
mm
Hg
Water
Solubility:
Highly
Water
soluble
Henry
Law
Constant:
6.02
x
10­
17
atm.­
m3/
mol
Half
Life
in
Air:
0.660
days
=
7.9
hours
(
measured
against
OH
radical
reaction)
Storage
Stability:
Stable
Stability
to
Sunlight:
80%
photodegradate
at
223
nm
within
10
hours.
4
of
5
C.
PRODUCT
CHEMISTRY
SCIENCE
CHPATER
ON
DODECYLBENZENESULFONIC
ACID
Chemical
Overview
DodecylBenzeneSulfonic
Acid
is
used
as
a
disinfectant
Chemical
Identification
Chemical
Name:
Dodecylbenzenesulfonic
Acid
Chemical
Family:
Surfactants
CAS#:
27176­
87­
0
Molecular
Formula:
C18H30O3S
Physical/
Chemical
Properties
Molecular
Wt.:
326.50
Log
KOW:
4.78
MP:
178
o
C
BP:
460o
C
Vapor
Pressure:
7.9
x
10­
11
mm
Hg
Water
Solubility:
0.7
mg/
L
Henry
Law
Constant:
4.8
x
10­
11
atm­
m3/
mol
Half
Life
in
Air:
0.654
days
=
7.85
Hours
(
Measured
against
OH
radical
reaction)
5
of
5
BIBLIOGRAPHY
CITATIONS
MRID#

4365640­
01
and
02
1.
Product
Chemistry
Data
in
support
of
Registration
of
Sodium
Dodecylbenzenesulfonic
Acid
and
Dodecylbenzenesulfonic
Acid
by
John
Todhunter,
and
Kelly
White,
1995:
SRS
International
Corp.
Lab
ID#
DD13SA
JV/
g63.13
433778­
01
2.
Physical/
Chemical
Properties
Data
on
DDBSA
and
its
Salts
by
John
Todhunter,
1995.
SRS
International
Corp.,
Study
ID#:
DDBS/
63­
13/
Supplemental
3.
US
EPA:
EPI
Suite,
A
Modeling
Program
For
Chemical
and
Fate
Properties,
Version
3.1,
2003
4.
ChemIDplus:
http://
chem.
sis.
nlm.
nih.
gov/
chemidplus/
jsp/
ChemFull
