January
9,
2005
MEMORANDUM
Subject:
Product
Chemistry
Science
Chapter
for
n­
Alkyl
(
60%
C14,
30%
C16,
5%
C12,
5
%
C18)
dimethyl
benzyl
ammonium
chloride
To:
A.
Najm
Shamim,
Ph.
D
Risk
Assessor
for
ADBAC
RED
Regulatory
Management
Branch
II
Antimicrobials
Division
(
7510C)

And
Jacqueline
Campbell­
McFarlane,
CRM
for
ADBAC
RED
Regulatory
Management
Branch
I
Antimicrobials
Division
(
7510C)

From:
Chris
Jiang,
Chemist
Product
Science
Branch
Antimicrobials
Division
(
7510C)

Thru:
Karen
P.
Hicks,
CTT
Team
Leader
Product
Science
Branch
Antimicrobials
Division
(
7510C)

And
Michele
Wingfield,
Branch
Chief
Product
Science
Branch
Antimicrobials
Division
(
7510C)

DP
Barcode:
D324587
Chemical
Code:
035603
EPA
Reg.
No.:
3377­
38
MRID
#=
s:
44467401
44467402
44467403
Enclosed
is
the
Science
Chapter
for
the
for
n­
Alkyl
(
60%
C14,
30%
C16,
5%
C12,
5
%
C18)
Dimethyl
Benzyl
Ammonium
Chloride
Reregistration
Eligibility
Decision
(
RED).
Page
2
of
3
Science
Chapter
on
for
n­
Alkyl
(
60%
C14,
30%
C16,
5%
C12,
5
%
C18)
Dimethyl
Benzyl
Ammonium
Chloride
(
MRID
#=
s:
44467401,
44467402,
44467403)

Product
Chemistry
Case
Overview
Chemical
Overview
The
main
ingredient
covered
for
this
Science
Chapter
is:
n­
Alkyl
(
60%
C14,
30
%
C16,
5
%
C12,
5%
C18)
Dimethyl
Benzyl
Ammonium
Chloride
Chemical
Name:
n­
Alkyl
(
60%
C14,
30
%
C16,
5
%
C12,
5%
C18)
dimethyl
benzyl
ammonium
chloride
Common/
Trade
Names:
ADBAC
Chemical
Family:
Quaternary
amines
CAS
Registry
Number:
68391­
01­
5
OPP
Chemical
Code:
069104
Molecular
Formula:
RC9H13NCl
(
R
=
n­
Alkyl
(
60%
C14,
30
%
C16,
5
%
C12,
5%
C18))
Molecular
Weight:
377.83
SCIENCE
ASSESSMENT
The
Agency
thoroughly
reviewed
the
registrants
=

submissions
(
in­
house
literature)
for
the
purpose
of
determining
the
reregistration
eligibility
of
n­
alkyl
(
60%
C14,
30
%
C16,
5
%
C12,
5%
C18)
dimethyl
benzyl
ammonium
chloride
for
use
in
wood
preservatives,
in
material
preservatives,
in
industrial
processes
and
water
systems,
and
in
commercial
,
institutional,
and
residential
premises.

Product
Chemistry
Assessment
The
physical
and
chemical
characteristics
of
n­
alkyl
(
60%
C14,
30
%
C16,
5
%
C12,
5%
C18)
dimethyl
benzyl
ammonium
chloride
are
described
below.

Technical
Grade
Active
Ingredient
(
TGAI):

Chemical
Name:
n­
Alkyl
(
60%
C14,
30
%
C16,
5
%
C12,
5%
C18)
dimethyl
benzyl
ammonium
chloride
Molecular
Wt.
377.83
Color:
50
APHA
units
Physical
State:
Liquid
Odor:
Ethanolic
*
Melting
Point:
241.02
oC
Boiling
Point:
Could
not
be
established
because
test
article
is
a
multi­
component
system
with
each
component
boiling
at
a
different
temperature
Density:
0.9429
g/
cm3
at
25
oC
Water
Solubility:
Completely
soluble
Page
3
of
3
*
Vapor
Pressure:
3.53
x
10­
12
mm
Hg
Dissociation
Constant:
Not
applicable
*
log
Kow:
3.9104
pH:
7.59
Stability:
Stable
with
respect
to
metal,
nonmetal,
temperature,
and
light
Oxidizing/
Reducing
Potential:
Not
applicable
as
product
does
not
contain
oxidizers
or
reducers
Flash
Point:
37.0
o
C
Explodability:
Not
applicable
for
liquids
which
are
not
potentially
explosive
Viscosity:
507.0
cSt
25
oC
Miscibility:
Not
applicable
as
product
is
not
to
be
mixed
with
petroleum
solvents
Corrosion
Characteristics
Corrosive
to
stainless
steel
and
no
corrosion
to
HDPE
Dielectric
breakdown
voltage:
Not
applicable
as
product
is
not
to
be
used
near
electrical
equipment
*­
Values
obtained
from
EpiSuite
n­
Alkyl
(
60%
C14,
30
%
C16,
5
%
C12,
5%
C18)
dimethyl
benzyl
ammonium
chloride
PRODUCT
CHEMISTRY
BIBLIOGRAPHY
US
EPA
=

s
MRID
#:
44467401,
Albemarle
BQ1416­
8
Biocide­­
Product
Chemistry,
(
1998)
Albemarle
Corp.,
Lab
Project
Number
8382­
141
Quat
6,
Albemarle
Corporation.

US
EPA
=

s
MRID
#:
44467402,
Tolbert,
A.,
Product
Chemistry
Chemical
Characterization
for
Determining
Identity
and
Purity
of
80%
n­
Alkyl
(
60%
C14,
30
%
C16,
5
%
C12,
5%
C18)
Dimethyl
Benzyl
Ammonium
Chloride,
(
1998),
Lab
Project
Number
Quat
6B,
Albemarle
Corporation.

US
EPA
=

s
MRID
#:
44467403,
Tolbert,
A.,
Product
Chemistry
Chemical
Characterization
for
Determining
the
Physical
and
Chemical
Properties,
and
Accelerated
Storage
Stability
of
80%
n­
Alkyl
(
60%
C14,
30
%
C16,
5
%
C12,
5%
C18)
Dimethyl
Benzyl
Ammonium
Chloride,
(
1998),
Lab
Project
Number
Quat
6A,
Albemarle
Corporation.

EPISuite
Computer
Program
