Technical
Support
Document
Inventory
Update
Reporting
Rule
Petroleum
Process
Stream
Partial
Exemption
Added
Petroleum
Process
Chemicals
Economics,
Exposure,
and
Technology
Division
Office
of
Pollution
Prevention
and
Toxics
U.
S.
Environmental
Protection
Agency
April
17,
2004
Revised
July
6,
2005
1This
document
was
revised
in
order
to
reflect
changes
made
to
the
IUR
Revisions
final
rule.
The
changes
were
made
as
a
result
of
comments
submitted
during
the
public
comment
period.
The
proposed
rule
was
published
on
January
26,
2005
(
70
FR
3658).
Inventory
Update
Reporting
Rule
Petroleum
Process
Stream
Partial
Exemption
Added
Petroleum
Process
Chemicals1
The
TSCA
Inventory
Update
Reporting
(
IUR)
regulations
include
a
partial
exemption
for
certain
specifically
listed
multi­
component
petroleum
process
streams.
Listed
in
40
CFR
710.46(
b)(
1),
these
streams
are
exempt
from
reporting
processing
and
use
information
identified
in
40
CFR
710.52(
c)(
4).
This
document
provides
the
methodology
used
to
determine
additions
to
the
petroleum
process
streams
list.

EPA
established
the
petroleum
process
streams
partial
exemption
because
"
these
chemicals
are
frequently
processed
at
the
site
where
they
are
produced
in
vessels
which
are
designed
to
minimize
losses
and,
coincidentally,
the
potential
for
releases
and
exposure.
In
many
cases,
the
flammable
nature
of
these
products
requires
that
they
also
be
transported,
processed,
and
stored
in
well
controlled
vessels.
For
these
reasons,
EPA
believes
worker
exposure
to
the
chemicals
termed
`
petroleum
process
streams'
for
purposes
of
IURA
is
diminished
and
thus
full
IURA
exposure­
related
reporting
is
not
warranted
at
this
time"
(
68
FR
848).
Partial
IUR
reporting
includes
site
location
and
production
volume
information
which
have
important
uses
by
EPA
and
others
apart
from
gauging
exposures
and
risk
screening.
It
is
important
to
note
that
the
basis
for
this
exemption
is
not
because
these
streams
are
of
known
low
toxicity.
Indeed,
EPA
believes
that
the
chemicals
termed
"
petroleum
process
streams"
for
purposes
of
IUR
are
often
toxicologically
active
(
68
FR
848).

The
petroleum
process
streams
partial
exemption
is
designed
for
a
very
specific
group
of
substances
which,
as
a
class,
are
typically
treated
similarly
due
to
the
conditions
of
manufacture
and
the
properties
and
uses
of
the
substance.
For
instance,
these
substances
are
frequently
processed
at
the
site
where
they
are
produced
in
vessels
which
are
designed
to
minimize
losses
and,
coincidentally,
the
potential
for
releases
and
exposure.
In
many
cases,
the
flammable
nature
of
these
products
requires
that
they
also
be
transported,
processed,
and
stored
in
well­
controlled
vessels.
Uses
of
these
substances
are
typically
site­
limited
as
intermediates
or
they
are
used
as
fuel.
For
these
reasons,
EPA
believes
exposure
to
the
substances
termed
"
petroleum
process
streams"
for
purposes
of
IUR
are
understood
and
thus
full
IUR
process
and
use
information
reporting
is
not
warranted
at
this
time.
Partial
IUR
reporting
is
still
required;
information
which
will
be
reported
for
petroleum
process
streams
includes
manufacturing
site
location
and
production
volume
information
which
have
important
uses
by
EPA
and
others
apart
from
gauging
exposures
and
risk
screening.

It
is
important
to
note
that
petroleum
refining
and
related
technologies
and
configurations
differ,
and
some
processes
could
be
considered
more
"
chemical"
(
i.
e.,
petrochemical)
than
"
petroleum
refining."
Petrochemicals
are
not
considered
petroleum
process
streams
for
the
purposes
of
reporting
under
IUR.
Qualifying
petroleum
process
streams
are
produced
within
the
scope
of
refining
operations,
and
typically
are
further
refined
at
the
same
site,
are
processed
and
2EPA
uses
the
following
criteria
EPA
to
determine
whether
a
proposed
substance
should
be
considered
a
petroleum
process
stream:

1)
Any
petroleum
process
stream
having
a
complex
and/
or
variable
composition
that
has
a
complete
definition
as
it
appears
in
the
TSCA
Inventory
is
considered
a
petroleum
process
stream
to
be
included
in
the
partial
exemption
list.
Specifically,
the
definition
must
include:
(
a)
process
description
(
e.
g.,
catalytic
cracking,
dewaxed,
destructive
distillation);
(
b)
carbon
(
alkyl)
range
(
e.
g.,
C4
through
C12)
(
c)
physical
properties
(
boiling
point
range,
viscosity,
physical
state,
slag,
and
softening
point,
etc.).
(
d)
principal
chemical
composition
(
hydrocarbons,
aromatics);
(
e)
source
(
petroleum)

2)
All
substances
identified
by
specific
chemical
terms
indicating
such
characteristics
as
functional
groups
outside
of
the
scope
of
hydrocarbons
derivatization,
single
carbon
fractions,
etc.
(
e.
g.,
benzene
derivatives,
benzenesulfonic
acid,
linear
and
branched
heptane)
are
excluded
from
the
category
(
are
not
viewed
as
petroleum
process
streams).

3)
Substances
that
were
identified
as
being
able
to
be
produced
through
other
means,
some
of
which
were
identified
as
such
on
the
API
list,
are
excluded
from
the
partial
exemption.
These
substances
are
found
at
some
petroleum
used
in
closed
equipment,
or
are
used
as
fuel.
Petrochemicals
often
have
names
sounding
similar
to
petroleum
process
streams,
but
can
be
made
using
a
synthetic
process
such
as
a
chemical
reaction.
The
term
"
petrochemical"
encompasses
a
wide
variety
of
chemical
substances
that
can
be
processed
and
used
in
a
variety
of
situations
outside
of
a
petroleum
refining
operation.
Petrochemicals
may
be
processed
and
used
at
various
sites
in
a
number
of
different
manners,
and
the
nature
and
likelihood
of
exposure
can
vary.
Unlike
petroleum
process
streams,
petrochemicals
can
be
solid
or
otherwise
not
require
processing
and
use
in
closed
equipment.
The
petrochemical
thereby
may
have
a
variety
of
uses
and
exposure
scenarios,
and
is
not
necessarily
site
limited
or
used
as
fuel,
as
typically
are
the
petroleum
process
streams.
For
instance,
once
a
substance
is
derivatized,
the
resulting
salt
is
often
a
solid
with
minimal
vapor
pressure
and
a
substantially
reduced
flammability.
One
seldom
contemplates
the
volatility
and
likelihood
of
combustion
of
alkylbenzene
sulfonates,
a
component
of
laundry
detergents.
Because
these
petrochemicals
are
less
flammible
and
unlikely
to
volatilize,
they
are
more
likely
to
be
processed
and
used
in
a
manner
that
results
in
exposure
of
workers
in
consumer
and
commercial
establishments
and
of
consumers
to
these
chemical
substances.

The
original
petroleum
process
streams
list
was
based
on
the
American
Petroleum
Institute's
(
API)
publication
"
Petroleum
Process
Stream
Terms
Included
in
the
Chemical
Substances
Inventory
Under
the
Toxic
Substances
Control
Act,"
published
in
1983
(
API
document).
Substances
listed
in
the
API
document
consisting
of
a
single
component
chemical,
except
for
water,
were
not
considered
petroleum
process
streams
for
IUR
reporting
purposes.
Water
(
CAS
number
7732­
18­
5)
is
partially
exempt
from
IUR
reporting
under
the
petroleum
process
stream
exemption.

Chemicals
to
be
Added
to
the
Petroleum
Process
Stream
Partial
Exemption
API's
proposed
petroleum
process
streams
to
be
added
to
the
petroleum
process
streams
listed
in
the
IUR
(
40
CFR
710.46(
b)(
1))
contained
125
substances.
Upon
reviewing
the
proposed
streams,
the
Agency
has
determined
that
the
following
25
substances
met
the
criteria
of
petroleum
process
streams
for
purposes
of
IUR
reporting2
and
will
be
added
to
the
partial
exemption
list
in
refineries,
but
also
may
be
produced
in
separate
petrochemical
manufacturing
facilities.
40
CFR
710.46(
b)(
1):

67254­
74­
4
Naphthenic
oils
67891­
81­
0
Distillates
(
petroleum),
oxidized
light,
potassium
salts
67891­
86­
5
Hydrocarbon
waxes
(
petroleum),
oxidized,
compds.
with
diisopropanolamine
68476­
27­
7
Fuel
gases,
amine
system
residues
68477­
98­
5
Gases
(
petroleum),
hydrotreater
blend
oil
recycle,
hydrogen­
nitrogen
rich
68477­
99­
6
Gases
(
petroleum),
isomerized
naphtha
fractionater,
C4­
rich,
hydrogen
sulfide­
free
68478­
31­
9
Tail
gas
(
petroleum),
isomerized
naphtha
fractionates,
hydrogen
sulfide­
free
68513­
03­
1
Naphtha
(
petroleum),
light
catalytic
reformed,
arom.­
free
68514­
39­
6
Naphtha
(
petroleum),
light
steam­
cracked,
isoprene­
rich
73138­
65­
5
Hydrocarbon
waxes
(
petroleum),
oxidized,
magnesium
salts
92045­
43­
7
Lubricating
oils
(
petroleum),
hydrocracked
nonarom.
solvent
deparaffined
92045­
58­
4
Naphtha
(
petroleum),
isomerization,
C6­
fraction
92062­
09­
4
Slack
wax
(
petroleum),
hydrotreated
98859­
55­
3
Distillates
(
petroleum),
oxidized
heavy,
compds.
with
diethanolamine
98859­
56­
4
Distillates
(
petroleum),
oxidized
heavy,
sodium
salts
101316­
73­
8
Lubricating
oils
(
petroleum),
used,
noncatalytically
refined
164907­
78­
2
Extracts
(
petroleum),
asphaltene­
low
vacuum
residue
solvent
164907­
79­
3
Residues
(
petroleum),
vacuum,
asphaltene­
low
178603­
63­
9
Gas
oils
(
petroleum),
vacuum,
hydrocracked,
hydroisomerized,
hydrogenated,
C10­
25
178603­
64­
0
Gas
oils
(
petroleum),
vacuum,
hydrocracked,
hydroisomerized,
hydrogenated,
C15­
30,
branched
and
cyclic
178603­
65­
1
Gas
oils
(
petroleum),
vacuum,
hydrocracked,
hydroisomerized,
hydrogenated,
C20­
40,
branched
and
cyclic
178603­
66­
2
Gas
oils
(
petroleum),
vacuum,
hydrocracked,
hydroisomerized,
hydrogenated,
C25­
55,
branched
and
cyclic
212210­
93­
0
Solvent
naphtha
(
petroleum),
heavy
arom.,
distn.
residues
221120­
39­
4
Distillates
(
petroleum),
cracked
steam­
cracked,
C5­
12
fraction
445411­
73­
4
Gas
oils
(
petroleum),
vacuum,
hydrocracked,
hydroisomerized,
hydrogenated,
C10­
25,
branched
and
cyclic
Chemicals
Already
Listed
under
the
Petroleum
Process
Stream
Partial
Exemption
The
following
3
substances
are
currently
listed
under
the
partial
exemption
list
in
40
CFR
710.46(
b)(
1):

68187­
60­
0
Hydrocarbons,
C4,
ethane­
propane­
cracked
68918­
98­
9
Fuel
gases,
refinery,
hydrogen
sulfide­
free
68921­
09­
5
Distillates
(
petroleum),
naphtha
unifiner
stripper
Chemicals
Considered
to
be
Polymers
The
following
14
substances
are
already
fully
exempt
under
the
Polymer
Exemption
at
40
CFR
710.46(
a)(
1):

68911­
05­
7
Hydrocarbons,
C12­
30,
olefin­
rich,
ethylene
polymn.
by­
product
68938­
55­
6
Distillates
(
petroleum),
steam­
cracked,
C5­
18
cracked
fraction,
polymd.,
sulfur­
crosslinked
68952­
09­
0
Naphtha,
light
steam­
cracked,
polymers
with
xylene
69430­
34­
8
Hydrocarbons,
C6­
20,
polymers
69430­
35­
9
Hydrocarbons,
C6­
20,
polymers,
hydrogenated
71302­
83­
5
Hydrocarbons,
C9­
unsatd.,
polymd.
74552­
82­
2
Distillates
(
petroleum),
steam­
cracked,
polymers
with
C8­
16­
cycloalkadiene
conc.
debenzenized
light
steam­
cracked
petroleum
naphtha
88526­
47­
0
Distillates
(
petroleum),
heavy
thermal
cracked,
polymd.,
hydrogenated
93685­
79­
1
Hydrocarbons,
C4,
1,3­
butadiene­
free,
polymd.,
pentaisobutylene
fraction,
hydrogenated
100815­
94­
9
Distillates
(
petroleum),
heavy
thermal
cracked,
polymd.

106233­
12­
9
Distillates
(
petroleum),
heavy
thermal
cracked,
polymers
with
C8­
16­
cycloalkadiene
conc.
debenzenized
light
steam­
cracked
petroleum
naphtha
106233­
13­
0
Distillates
(
petroleum),
heavy
thermal
cracked,
polymers
with
C8­
16­
cycloalkadiene
conc.
debenzenized
light
steam­
cracked
petroleum
naphtha
and
methylstyrene
120928­
15­
6
Kerosine
(
petroleum),
polymn.
163440­
93­
5
Distillates
(
petroleum),
steam­
cracked,
C8­
12
fraction,
polymd.

Chemicals
Considered
not
to
be
Eligible
for
the
Petroleum
Process
Stream
Partial
Exemption
EPA
determined
that
some
of
the
API
suggested
substances
were
not
petroleum
process
streams
as
covered
by
this
partial
exemption.
In
general,
the
substances
not
being
added
to
the
partial
exemption
are
reaction
products
formed
by
chemical
reaction
of
a
specific
hydrocarbon
with
another
chemical
substance.
Most
are
sulfonated,
i.
e.
reacted
with
sulfuric
acid
or
an
active
sulfate
compound
or
formed
by
oxidizing
a
naturally
occurring
mercaptan
to
produce
the
derivatized
hydrocarbon.
Some
are
oxygenated
compounds
or
other
derivatized
hydrocarbons.
As
such,
the
chemical
substances
for
which
an
exemption
was
denied
are
the
initial
manufactured
chemicals
in
the
synthesis
of
a
commercial
chemical
product.

Eighty­
three
of
the
proposed
process
petroleum
streams
were
not
added
to
the
partial
exemption.
Following
are
four
basic
categories
of
chemicals
with
independent
explanations
as
to
why
these
substances
are
not
considered
petroleum
process
streams
(
i.
e.,
directly
related
to
petroleum
refining)
for
purposes
of
IUR
reporting.
Some
of
the
substances
fit
several
categories,
and
some
of
the
substances
can
also
be
manufactured
by
means
other
than
refining;
those
substances
were
placed
in
the
category
for
which
EPA
determined
best
described
the
reasons
that
they
were
not
added
to
the
list
of
petroleum
refining
process
streams
partially
exempt
from
reporting
under
the
IUR.
These
decisions
are
consistent
with
the
definition
criteria
in
Addendum
I
of
TSCA
Candidate
List
of
Chemical
Substances,
Generic
Terms
Covering
Petroleum
Refinery
Process
Streams
(
January
1978).

The
following
chemical
substances,
consisting
of
a
complex
combination
of
one
class
of
hydrocarbons,
e.
g.,
all
alkanes
or
all
alkenes,
(
with
defined
carbon
number
ranges)
and
aromatic
hydrocarbons
(
without
defined
carbon
number
range),
which
do
not
specify
petroleum
as
a
source
material
in
the
chemical
name,
are
not
considered
to
be
petroleum
process
streams
for
purposes
of
IUR
reporting.
The
Agency
will
not
add
these
chemical
substances
to
the
partial
exemption
list.

68333­
90­
4
Aromatic
hydrocarbons,
polycyclic,
alkylnaphthalene­
toluene
thermal
hydrodealkylation
distn.
residues
68409­
73­
4
Aromatic
hydrocarbons,
biphenyl­
rich
68551­
15­
5
Alkanes,
C8­
10­
iso­
68551­
16­
6
Alkanes,
C9­
11­
iso­
68551­
17­
7
Alkanes,
C10­
13­
iso­
68551­
18­
8
Alkanes,
C10­
14­
iso­
68551­
19­
9
Alkanes,
C12­
14­
iso­
68551­
20­
2
Alkanes,
C13­
16­
iso­
68603­
35­
0
Alkenes,
C18­
24
.
alpha.­,
bisulfited
68989­
41­
3
Aromatic
hydrocarbons,
biphenyl­
rich,
thermal
hydrodealkylation
residues
68990­
23­
8
Alkenes,
C12­
26
.
alpha.­,
sulfated
70024­
92­
9
Alkanes,
C7­
8­
iso­
72162­
34­
6
Alkenes,
C18­
24
.
alpha.­,
sulfurized
73138­
29­
1
Alkanes,
C10­
18
74664­
93­
0
Alkanes,
C14­
30
90622­
46­
1
Alkanes,
C14­
16
93762­
80­
2
Alkenes,
C15­
18
93924­
07­
3
Alkanes,
C10­
14
93924­
10­
8
Alkenes,
C20­
24
.
alpha.­
93924­
11­
9
Alkenes,
C24­
28
.
alpha.­
129813­
66­
7
Alkanes,
C10­
13
129813­
67­
8
Alkanes,
C12­
14
131459­
42­
2
Alkenes,
C24­
54­
branched
and
linear
.
alpha.­
289711­
49­
5
Alkanes,
C10­
24
289711­
48­
4
Alkanes,
C10­
24­
branched
329909­
27­
5
Alkanes,
C10­
15­
iso­,
cyclic
and
linear
426260­
76­
6
Heptane,
branched,
cyclic
and
linear
The
following
well
defined
alkylbenzenes,
along
with
their
fractionation
products
and
distillation
residues,
cannot
be
regarded
as
petroleum
process
streams
for
purposes
of
IUR.
The
Agency
will
not
add
these
chemical
substances
to
the
partial
exemption
list.

67774­
74­
7
Benzene,
C10­
13­
alkyl
derivs.
68855­
24­
3
Benzene,
C14­
30­
alkyl
derivs.
68936­
98­
1
Benzene,
(
1­
methylethyl)­,
distn.
residues
68936­
99­
2
Benzene,
(
1­
methylethyl)­,
distn.
residues,
benzene­
enriched
68987­
40­
6
Benzene,
di­
C10­
14­
alkyl
derivs.,
distn.
residues
70356­
32­
0
Benzene,
C14­
26­
alkyl
derivs.
85117­
41­
5
Benzene,
mono­
C10­
14­
alkyl
derivs.,
fractionation
bottoms
85117­
43­
7
Benzene,
mono­
C10­
14­
alkyl
derivs.,
fractionation
bottoms,
heavy
ends
94094­
93­
6
Benzene,
mono­
C10­
13­
alkyl
derivs.,
fractionation
bottoms,
heavy
ends
102783­
85­
7
Benzene,
C10­
14­
alkyl
derivs.,
sulfonated
115733­
08­
9
Benzene,
C14­
24­
branched
and
linear
alkyl
derivs.
125025­
88­
9
Benzene,
C14­
16­
alkyl
derivs.,
distn.
residues
129813­
59­
8
Benzene,
mono­
C12­
14­
alkyl
derivs.
129813­
60­
1
Benzene,
mono­
C14­
16­
alkyl
derivs.
129813­
61­
2
Benzene,
mono­
C14­
16­
alkyl
derivs.,
fractionation
bottoms
129813­
62­
3
Benzene,
mono­
C10­
13­
alkyl
derivs.,
fractionation
bottoms,
light
ends
129813­
63­
4
Benzene,
mono­
C10­
14­
alkyl
derivs.,
fractionation
bottoms,
light
ends
146865­
37­
4
Benzene,
di­
C10­
18­
alkyl
derivs
148520­
81­
4
Benzene,
mono­
C10­
13­
alkyl
derivs.,
fractionation
bottoms,
heavy
ends,
sulfonated
151911­
58­
9
Benzene,
mono­
C12­
13­
branched
alkyl
derivs.,
fractionation
bottoms
151911­
59­
0
Benzene,
mono­
C12­
13­
branched
alkyl
derivs.,
fractionation
bottoms,
light
ends
151911­
60­
3
Benzene,
mono­
C12­
13­
branched
alkyl
derivs.,
fractionation
bottoms,
heavy
ends
156105­
29­
2
Benzene,
mono­
C20­
24­
alkyl
derivs.

The
following
chemical
substances
that
include
the
chemical
modification
terms
sulfated,
bisulfited,
sulfurized,
sulfonated,
esters,
and
reaction
products,
etc.
in
their
chemical
names
are
not
considered
to
be
petroleum
process
streams
for
IUR
reporting
purposes.
These
chemicals
are
not
produced
within
the
scope
of
petroleum
refining
operations,
but
rather
they
are
considered
to
be
products
from
other
chemical
manufacturing
processes
and,
therefore,
will
not
be
added
to
the
partial
exemption
list
at
40
CFR
710.46(
b)(
1).
Additionally,
one
substance's
(
CAS
no.
73665­
18­
6)
source
material
is
coal
and
not
petroleum
and
several
substances
were
from
undefined
sources
(
CAS
nos.
68649­
47­
8,
68649­
48­
9,
68649­
49­
0,
71820­
39­
8).
The
Agency
will
not
add
these
chemical
substances
to
the
partial
exemption
list.

68131­
94­
2
Extracts
(
petroleum),
heavy
naphthenic
distillate
solvent,
sulfonated
68131­
95­
3
Extracts
(
petroleum),
heavy
naphthenic
distillate
solvent,
sulfonated,
sodium
salts
68131­
96­
4
Extracts
(
petroleum),
paraffinic
distillate
solvent,
sulfonated
68131­
97­
5
Extracts
(
petroleum),
paraffinic
distillate
solvent,
sulfonated,
sodium
salts
68201­
32­
1
Asphalt,
sulfonated,
sodium
salt
68201­
54­
7
Paraffin
oils,
sulfurized
68425­
32­
1
Hydrocarbon
waxes
(
petroleum),
clay­
treated
microcryst.,
contg.
polyethylene,
oxidized,
reaction
products
with
2,4­
TDI
68442­
08­
0
Naphthalene,
isopropylated
68477­
23­
6
Tar
acids,
residues,
distillates,
first­
cut
(
In
this
case,
source
material
is
not
petroleum,
but
coal)
68478­
11­
5
Phenols
(
petroleum),
sodium
salts
68603­
04­
3
Gas
oils
(
petroleum),
heavy
vacuum,
sulfonated
68603­
05­
4
Gas
oils
(
petroleum),
heavy
vacuum,
sulfonated,
ammonium
salts
68603­
06­
5
Gas
oils
(
petroleum),
hydrotreated
vacuum,
sulfonated
68603­
07­
6
Gas
oils
(
petroleum),
hydrotreated
vacuum,
sulfonated,
ammonium
salts
68606­
23­
5
Hydrocarbon
oils,
sulfurized
68606­
38­
2
Kerosine
(
petroleum),
sulfonated
68649­
47­
8
Paraffin
waxes
and
Hydrocarbon
waxes,
oxidized,
calcium
sodium
salts
68649­
48­
9
Paraffin
waxes
and
Hydrocarbon
waxes,
oxidized,
lithium
salts
68649­
49­
0
Paraffin
waxes
and
Hydrocarbon
waxes,
oxidized,
lithium
sodium
salts
68814­
88­
0
Distillates
(
petroleum),
heavy
naphthenic,
sulfurized
68815­
10­
1
Petroleum,
sulfurized
68920­
58­
1
Clarified
oils
(
petroleum),
catalytic
cracked,
reaction
products
with
TDI
68990­
36­
3
Disulfides,
C2­
7­
alkyl
71820­
39­
8
Paraffin
oils,
oxidized,
calcium
salts
73138­
64­
4
Hydrocarbon
waxes
(
petroleum),
oxidized,
esters
with
glycerol
73665­
18­
6
Extract
residues
(
coal),
tar
oil
alk.,
naphthalene
distn.
residues
96471­
07­
7
Naphtha
(
petroleum),
heavy
alkylate,
sulfonated
102479­
87­
8
Gases
(
petroleum),
extractive,
C3­
5,
butene­
isobutylene­
rich,
reaction
products
with
butene,
isobutylene
and
methanol,
distn.
residues
108083­
43­
8
Gases
(
petroleum),
extractive,
C4­
6,
isopentene­
rich,
reaction
products
with
methanol,
byproducts
from
108083­
44­
9
Gases
(
petroleum),
extractive,
C4­
6,
isopentene­
rich,
reaction
products
with
methanol,
ether
fraction,
hydrogenated,
cracked,
isopentene
fraction
111163­
74­
7
Distillates
(
petroleum),
catalytic
reformer
fractionator
residue,
low
boiling,
sulfonated,
sodium
salts
152699­
00­
8
Naphthalene,
cetyl
derivs.
216977­
01­
4
Solvent
naphtha
(
petroleum),
heavy
arom.,
middle
fraction,
reaction
products
with
1­
butene,
distn.
residues
The
following
chemical
substance,
as
specified
in
its
supplemental
definition
included
on
the
TSCA
Chemical
Substances
Inventory,
is
derived
using
a
chemical
process
(
a
Fischer­
Tropsch
process)
from
a
non­
petroleum
source.
A
Fischer­
Tropsch
process
uses
synthesis
gas,
a
mixture
of
hydrogen
and
carbon
monoxide,
to
produce
hydrocarbons
and
other
aliphatic
compounds
(
such
as
methane,
synthetic
gasoline
and
waxes,
and
alcohols).
The
Agency
will
not
add
this
chemical
substance
to
the
partial
exemption
list.

277316­
99­
1
Paraffin
waxes
and
Hydrocarbon
waxes,
hydrocracked,
solvent­
dewaxed
Attachment
A:
API's
Proposed
Additions
(
Feb
25,
2004)

CAS
No
Substance
Definition
Caveat
129813­
66­
7
Alkanes,
C10­
13
68551­
17­
7
Alkanes,
C10­
13­
iso­

93924­
07­
3
Alkanes,
C10­
14
68551­
18­
8
Alkanes,
C10­
14­
iso­

329909­
27­
5
Alkanes,
C10­
15­
iso­,
cyclic
and
linear
73138­
29­
1
Alkanes,
C10­
18
289711­
49­
5
Alkanes,
C10­
24
289711­
48­
4
Alkanes,
C10­
24­
branched
129813­
67­
8
Alkanes,
C12­
14
68551­
19­
9
Alkanes,
C12­
14­
iso­

68551­
20­
2
Alkanes,
C13­
16­
iso­

90622­
46­
1
Alkanes,
C14­
16
74664­
93­
0
Alkanes,
C14­
30
70024­
92­
9
Alkanes,
C7­
8­
iso­

68551­
15­
5
Alkanes,
C8­
10­
iso­

68551­
16­
6
Alkanes,
C9­
11­
iso­

68990­
23­
8
Alkenes,
C12­
26
.
alpha.­,
sulfated
93762­
80­
2
Alkenes,
C15­
18
68603­
35­
0
Alkenes,
C18­
24
.
alpha.­,
bisulfited
72162­
34­
6
Alkenes,
C18­
24
.
alpha.­,
sulfurized
93924­
10­
8
Alkenes,
C20­
24
.
alpha.­

93924­
11­
9
Alkenes,
C24­
28
.
alpha.­

131459­
42­
2
Alkenes,
C24­
54­
branched
and
linear
.
alpha.­

68409­
73­
4
Aromatic
hydrocarbons,
biphenyl­
rich
A
complex
combination
of
hydrocarbons
produced
by
the
hydrodealkylation
and
distillation
of
toluene.
It
consists
predominantly
of
aromatic
hydrocarbons
having
a
carbon
number
C6
or
greater,
primarily
biphenyl,
and
boiling
in
the
range
of
approximately
79.
degree.
C
to
398.
degree.
C
(
175.
degree.
F
to
750.
degree.
F).
Substance
found
at
refineries,
but
also
may
be
produced
in
separate
petrochemical
manufacturing
facilities.

68989­
41­
3
Aromatic
hydrocarbons,
biphenyl­
rich,
thermal
hydrodealkylation
residues
The
complex
combination
of
hydrocarbons
obtained
from
a
thermal
hydrodealkylation
process.
It
consists
predominantly
of
aromatic
hydrocarbons,
primarily
biphenyl,
and
boiling
approximately
above
110.
degree.
C
(
230.
degree.
F).
Substance
found
at
refineries,
but
also
may
be
produced
in
separate
petrochemical
manufacturing
facilities.
CAS
No
Substance
Definition
Caveat
68333­
90­
4
Aromatic
hydrocarbons,
polycyclic,
alkylnaphthalene­
toluene
thermal
hydrodealkylation
distn.
residues
The
complex
residuum
from
the
distillation
of
products
from
the
thermal
hydrodealkylation
of
alkylnaphthalene
and
toluene.
It
consists
predominantly
of
bi­
and
polynuclear
aromatic
hydrocarbons
such
as
naphthalenes,
biphenyl,
fluorene
and
phenanthrene.
Substance
found
at
refineries,
but
also
may
be
produced
in
separate
petrochemical
manufacturing
facilities.

68201­
32­
1
Asphalt,
sulfonated,
sodium
salt
68936­
98­
1
Benzene,
(
1­
methylethyl)­,
distn.
residues
The
complex
combination
of
hydrocarbons
produced
by
the
distillation
of
products
from
cumene
manufacturing
process.
It
consists
primarily
of
diisopropylbenzene
with
various
small
amounts
of
C4
substituted
benzenes
and
heavier
non­
aromatic
hydrocarbons.
Substance
found
at
refineries,
but
also
may
be
produced
in
separate
petrochemical
manufacturing
facilities.

68936­
99­
2
Benzene,
(
1­
methylethyl)­,
distn.
residues,
benzene­
enriched
67774­
74­
7
Benzene,
C10­
13­
alkyl
derivs.

102783­
85­
7
Benzene,
C10­
14­
alkyl
derivs.,
sulfonated
125025­
88­
9
Benzene,
C14­
16­
alkyl
derivs.,
distn.
residues
115733­
08­
9
Benzene,
C14­
24­
branched
and
linear
alkyl
derivs.

70356­
32­
0
Benzene,
C14­
26­
alkyl
derivs.

68855­
24­
3
Benzene,
C14­
30­
alkyl
derivs.

68987­
40­
6
Benzene,
di­
C10­
14­
alkyl
derivs.,
distn.
residues
The
final
cut
residuum
boiling
at
approximately
503.
degree.
C
(
938.
degree.
F).

146865­
37­
4
Benzene,
di­
C10­
18­
alkyl
derivs.

94094­
93­
6
Benzene,
mono­
C10­
13­
alkyl
derivs.,
fractionation
bottoms,
heavy
ends
Heavy
boiling
portions
that
are
obtained
during
the
distillation
of
the
residues
from
the
distillative
processing
of
mono
C10­
13
alkylbenzenes
with
a
boiling
point
greater
than
350.
degree.
C
(
662.
degree.
F).

148520­
81­
4
Benzene,
mono­
C10­
13­
alkyl
derivs.,
fractionation
bottoms,
heavy
ends,
sulfonated
129813­
62­
3
Benzene,
mono­
C10­
13­
alkyl
derivs.,
fractionation
bottoms,
light
ends
Light
boiling
portions
that
are
obtained
during
the
distillation
of
the
fractionation
bottoms
from
the
processing
of
C10­
13
alkylbenzenes.

85117­
41­
5
Benzene,
mono­
C10­
14­
alkyl
derivs.,
fractionation
bottoms
A
complex
residue
of
linear
C10­
14
alkylbenzenes
with
a
boiling
range
greater
than
330.
degree.
C
(
626.
degree.
F),
consisting
predominantly
of
diphenylalkanes,
dialkylbenzenes,
and
diphenyldialkanes.

85117­
43­
7
Benzene,
mono­
C10­
14­
alkyl
derivs.,
fractionation
bottoms,
heavy
ends
Heavy
boiling
fraction
obtained
during
the
distillation
of
the
residues
from
the
distillative
processing
of
monoC10­
14alkylbenzenes.

129813­
63­
4
Benzene,
mono­
C10­
14­
alkyl
derivs.,
fractionation
bottoms,
light
ends
Light
boiling
fractions
that
are
obtained
during
the
distillation
of
monoC10­
14
alkylbenzene
fractionation
bottoms.
CAS
No
Substance
Definition
Caveat
151911­
58­
9
Benzene,
mono­
C12­
13­
branched
alkyl
derivs.,
fractionation
bottoms
The
bottoms
from
fractionation
boiling
approximately
above
338.
degree.
(
640.
degree.
F).

151911­
60­
3
Benzene,
mono­
C12­
13­
branched
alkyl
derivs.,
fractionation
bottoms,
heavy
ends
The
heavy
ends
of
fractionation
bottoms
boiling
approximately
above
382.
degree.
(
720.
degree.
F).

151911­
59­
0
Benzene,
mono­
C12­
13­
branched
alkyl
derivs.,
fractionation
bottoms,
light
ends
The
light
ends
from
fractionation
bottoms
boiling
in
the
range
of
approximately
338.
degree.
C
to
382.
degree.
C
(
640.
degree.
F
to
720.
degree.
F).

129813­
59­
8
Benzene,
mono­
C12­
14­
alkyl
derivs.

129813­
60­
1
Benzene,
mono­
C14­
16­
alkyl
derivs.

129813­
61­
2
Benzene,
mono­
C14­
16­
alkyl
derivs.,
fractionation
bottoms
Distillation
residues
obtained
during
the
distillation
of
mono­
C14­
16
alkyl
benzenes.

156105­
29­
2
Benzene,
mono­
C20­
24­
alkyl
derivs.

68920­
58­
1
Clarified
oils,
petroleum,
catalytic
cracked,
reaction
products
with
TDI
111163­
74­
7
Distillates,
petroleum,
catalytic
reformer
fractionator
residue,
lowboiling,
sulfonated,
sodium
salts
221120­
39­
4
Distillates,
petroleum,
cracked
steam­
cracked,
C5­
12
fraction
A
complex
combination
of
hydrocarbons
produced
by
cracking
a
fraction
of
steam­
cracked
distillates.
It
consists
of
alicyclic
and
aromatic
hydrocarbons
having
carbon
numbers
predominantly
in
the
range
of
C5
through
C12
and
boiling
in
the
range
of
approximately
82
.
degree.
C
to
260
.
degree.
C
(
180
.
degree.
F
to
500
.
degree.
F).

68814­
88­
0
Distillates,
petroleum,
heavy
naphthenic,
sulfurized
100815­
94­
9
Distillates,
petroleum,
heavy
thermal
cracked,
polymd.

88526­
47­
0
Distillates,
petroleum,
heavy
thermal
cracked,
polymd.,
hydrogenated
106233­
12­
9
Distillates,
petroleum,
heavy
thermal
cracked,
polymers
with
C8­
16­
cycloalkadiene
conc.
debenzenized
light
steam­
cracked
petroleum
naphtha
106233­
13­
0
Distillates,
petroleum,
heavy
thermal
cracked,
polymers
with
C8­
16­
cycloalkadiene
conc.
debenzenized
light
steam­
cracked
petroleum
naphtha
and
methylstyrene
Substance
found
at
refineries,
but
also
may
be
produced
in
separate
petrochemical
manufacturing
facilities.
CAS
No
Substance
Definition
Caveat
68921­
09­
5
Distillates,
petroleum,
naphtha
unifiner
stripper
A
complex
combination
of
hydrocarbons
produced
by
stripping
the
products
from
the
naphtha
unifiner.
It
consists
of
saturated
aliphatic
hydrocarbons
having
carbon
numbers
predominantly
in
the
range
of
C2
through
C6.

98859­
55­
3
Distillates,
petroleum,
oxidized
heavy,
compds.
with
diethanolamine
98859­
56­
4
Distillates,
petroleum,
oxidized
heavy,
sodium
salts
67891­
81­
0
Distillates,
petroleum,
oxidized
light,
potassium
salts
68938­
55­
6
Distillates,
petroleum,
steam­
cracked,
C5­
18
cracked
fraction,
polymd.,
sulfur­
crosslinked
163440­
93­
5
Distillates,
petroleum,
steam­
cracked,
C8­
12
fraction,
polymd.

74552­
82­
2
Distillates,
petroleum,
steam­
cracked,
polymers
with
C8­
16­
cycloalkadiene
conc.
debenzenized
light
steam­
cracked
petroleum
naphtha
68990­
36­
3
Disulfides,
C2­
7­
alkyl
73665­
18­
6
Extract
residues,
coal,
tar
oil
alk.,
naphthalene
distn.
residues
The
residue
obtained
from
chemical
oil
extracted
after
the
removal
of
naphthalene
by
distillation
composed
primarily
of
two
to
four
membered
condensed
ring
aromatic
hydrocarbons
and
aromatic
nitrogen
bases.

164907­
78­
2
Extracts,
petroleum,
asphaltene­
low
vacuum
residue
solvent
A
complex
combination
of
hydrocarbons
obtained
as
the
solvent
soluble
fraction
from
C3
to
C4
solvent
extraction
of
low
asphaltene
vacuum
tower
residues.
It
consists
predominantly
of
hydrocarbons
having
carbon
numbers
greater
than
C25
and
boiling
above
400.
degree.
C
(
752.
degree.
F).

68131­
94­
2
Extracts,
petroleum,
heavy
naphthenic
distillate
solvent,
sulfonated
68131­
95­
3
Extracts,
petroleum,
heavy
naphthenic
distillate
solvent,
sulfonated,
sodium
salts
68131­
96­
4
Extracts,
petroleum,
paraffinic
distillate
solvent,
sulfonated
68131­
97­
5
Extracts,
petroleum,
paraffinic
distillate
solvent,
sulfonated,
sodium
salts
68476­
27­
7
Fuel
gases,
amine
system
residues
The
complex
residuum
from
the
amine
system
for
removal
of
hydrogen
sulfide.
It
consists
primarily
of
hydrogen,
methane
and
ethane
with
various
small
amounts
of
nitrogen,
carbon
dioxide
and
hydrocarbons
having
carbon
numbers
predominantly
in
the
range
of
C3
through
C5.
CAS
No
Substance
Definition
Caveat
68918­
98­
9
Fuel
gases,
refinery,
hydrogen
sulfide­
free
A
complex
combination
of
light
gases
consisting
of
hydrocarbons
having
carbon
numbers
predominantly
in
the
range
of
C1
through
C3.
Produced
from
the
fractionation
and
subsequent
scrubbing
of
hydrotreating
units.

68603­
04­
3
Gas
oils,
petroleum,
heavy
vacuum,
sulfonated
68603­
05­
4
Gas
oils,
petroleum,
heavy
vacuum,
sulfonated,
ammonium
salts
68603­
06­
5
Gas
oils,
petroleum,
hydrotreated
vacuum,
sulfonated
68603­
07­
6
Gas
oils,
petroleum,
hydrotreated
vacuum,
sulfonated,
ammonium
salts
178603­
63­
9
Gas
oils,
petroleum,
vacuum,
hydrocracked,
hydroisomerized,
hydrogenated,
C10­
25
A
complex
combination
of
saturated
hydrocarbons
obtained
by
catalytic
hydrogenation
of
vacuum
gas
oils
followed
with
dewaxing
by
hydroisomerization
and
stabilization
by
hydrotreating
at
high
pressure.
It
consists
of
saturated
hydrocarbons
having
carbon
numbers
predominantly
in
the
range
of
C10­
C25
and
boiling
in
the
range
of
approximately
148.
degree.
C
to
343.
degree.
C
(
300.
degree.
F
to
650.
degree.
F).

445411­
73­
4
Gas
oils,
petroleum,
vacuum,
hydrocracked,
hydroisomerized,
hydrogenated,
C10­
25,
branched
and
cyclic
178603­
64­
0
Gas
oils,
petroleum,
vacuum,
hydrocracked,
hydroisomerized,
hydrogenated,
C15­
30,
branched
and
cyclic
A
complex
combination
of
saturated
hydrocarbons
obtained
by
catalytic
hydrogenation
of
vacuum
gas
oils
followed
with
dewaxing
by
hydroisomerization
and
stabilization
by
hydrotreating
at
high
pressure.
It
consists
of
saturated
hydrocarbons,
isoparaffins,
and
cycloparaffins
having
carbon
numbers
predominantly
in
the
range
of
C15­
C30.
The
viscosity
at
40.
degree.
C
is
10
cSt,
and
the
viscosity
index
is
greater
than
95.

178603­
65­
1
Gas
oils,
petroleum,
vacuum,
hydrocracked,
hydroisomerized,
hydrogenated,
C20­
40,
branched
and
cyclic
A
complex
combination
of
saturated
hydrocarbons
obtained
by
catalytic
hydrogenation
of
vacuum
gas
oils
followed
with
dewaxing
by
hydroisomerization
and
stabilization
by
hydrotreating
at
high
pressure.
It
consists
of
saturated
hydrocarbons,
isoparaffins,
and
cycloparaffins
having
carbon
numbers
predominantly
in
the
range
of
C20­
C40.
The
viscosity
at
40.
degree.
C
is
20
cSt,
and
the
viscosity
index
is
greater
than
120.

178603­
66­
2
Gas
oils,
petroleum,
vacuum,
hydrocracked,
hydroisomerized,
hydrogenated,
C25­
55,
branched
and
cyclic
A
complex
combination
of
saturated
hydrocarbons
obtained
by
catalytic
hydrogenation
of
vacuum
gas
oils
followed
with
dewaxing
by
hydroisomerization
and
stabilization
by
hydrotreating
at
high
pressure.
It
consists
of
saturated
hydrocarbons,
isoparaffins,
and
branched
cycloparaffins
having
carbon
numbers
predominantly
in
the
range
of
C25­
C55.
The
viscosity
at
40.
degree.
C
is
65
cSt,
and
the
viscosity
index
is
greater
than
115.
CAS
No
Substance
Definition
Caveat
102479­
87­
8
Gases,
petroleum,
extractive,
C3­
5,
butene­
isobutylene­
rich,
reaction
products
with
butene,
isobutylene
and
methanol,
distn.
residues
108083­
43­
8
Gases,
petroleum,
extractive,
C4­
6,
isopentene­
rich,
reaction
products
with
methanol,
byproducts
from
108083­
44­
9
Gases,
petroleum,
extractive,
C4­
6,
isopentene­
rich,
reaction
products
with
methanol,
ether
fraction,
hydrogenated,
cracked,
isopentene
fraction
68477­
98­
5
Gases,
petroleum,
hydrotreater
blend
oil
recycle,
hydrogen­
nitrogenrich
A
complex
combination
obtained
from
recycled
hydrotreated
blend
oil.
It
consists
primarily
of
hydrogen
and
nitrogen
with
various
small
amounts
of
carbon
monoxide,
carbon
dioxide
and
hydrocarbons
having
carbon
numbers
predominantly
in
the
range
of
C1
through
C5.

68477­
99­
6
Gases,
petroleum,
isomerized
naphtha
fractionater,
C4­
rich,
hydrogen
sulfide­
free
426260­
76­
6
Heptane,
branched,
cyclic
and
linear
A
complex
combination
of
hydrocarbons
composed
primarily
of
branched,
linear
and
cyclic
heptanes,
and
may
contain
heptenes.
It
boils
in
the
range
of
195
F
to
209
F.
Added
after
publication
of
July
2003
TSCA
Inventory
68606­
23­
5
Hydrocarbon
oils,
sulfurized
68425­
32­
1
Hydrocarbon
waxes,
petroleum,
clay­
treated
microcryst.,
contg.
polyethylene,
oxidized,
reaction
products
with
2,4­
TDI
67891­
86­
5
Hydrocarbon
waxes,
petroleum,
oxidized,
compds.
with
diisopropanolamine
73138­
64­
4
Hydrocarbon
waxes,
petroleum,
oxidized,
esters
with
glycerol
73138­
65­
5
Hydrocarbon
waxes,
petroleum,
oxidized,
magnesium
salts
68911­
05­
7
Hydrocarbons,
C12­
30,
olefin­
rich,
ethylene
polymn.
by­
product
A
complex
combination
of
hydrocarbons
produced
during
fractionation
in
ethylene
polymerization.
It
consists
predominantly
of
hydrocarbons
having
carbon
numbers
predominantly
in
the
range
of
C12
through
C30.

93685­
79­
1
Hydrocarbons,
C4,
1,3­
butadiene­
free,
polymd.,
pentaisobutylene
fraction,
hydrogenated
CAS
No
Substance
Definition
Caveat
68187­
60­
0
Hydrocarbons,
C4,
ethane­
propane­
cracked
A
complex
combination
of
hydrocarbons
obtained
from
the
thermal
cracking
of
a
mixture
of
ethane
and
propane.
It
consists
predominantly
of
C4
hydrocarbons.

69430­
34­
8
Hydrocarbons,
C6­
20,
polymers
69430­
35­
9
Hydrocarbons,
C6­
20,
polymers,
hydrogenated
71302­
83­
5
Hydrocarbons,
C9­
unsatd.,
polymd.

120928­
15­
6
Kerosine,
petroleum,
polymn.

68606­
38­
2
Kerosine,
petroleum,
sulfonated
92045­
43­
7
Lubricating
oils,
petroleum,
hydrocracked
nonarom.
solvent
deparaffined
101316­
73­
8
Lubricating
oils,
petroleum,
used,
noncatalytically
refined
68952­
09­
0
Naphtha,
light
steam­
cracked,
polymers
with
xylene
96471­
07­
7
Naphtha,
petroleum,
heavy
alkylate,
sulfonated
92045­
58­
4
Naphtha,
petroleum,
isomerization,
C6­
fraction
A
complex
combination
of
hydrocarbons
obtained
by
distillation
of
a
gasoline
which
has
been
catalytically
isomerized.
It
consists
predominantly
of
hexane
isomers
boiling
in
the
range
of
approximately
60.
degree.
C
to
66.
degree.
C
(
140.
degree.
F
to
151.
degree.
F).

68513­
03­
1
Naphtha,
petroleum,
light
catalytic
reformed,
arom.­
free
A
complex
combination
of
hydrocarbons
obtained
from
distillation
of
products
from
a
catalytic
reforming
process.
It
consists
predominantly
of
hydrocarbons
having
carbon
numbers
predominantly
in
the
range
of
C5
through
C8
and
boiling
in
the
range
of
approximately
35.
degree.
C
to
120.
degree.
C
(
95.
degree.
F
to
248.
degree.
F).
It
contains
a
relatively
large
proportion
of
branched
chain
hydrocarbons
with
the
aromatic
components
removed.

68514­
39­
6
Naphtha,
petroleum,
light
steam­
cracked,
isoprene­
rich
A
complex
combination
of
hydrocarbons
produced
by
the
distillation
of
the
products
from
a
steam
cracking
process.
It
consists
predominantly
of
unsaturated
hydrocarbons
having
a
carbon
number
of
C5,
primarily
isoprene,
and
boiling
in
the
range
of
approximately
20.
degree.
C
to
44.
degree.
C
(
68.
degree.
F
to
112.
degree.
F)

152699­
00­
8
Naphthalene,
cetyl
derivs.

68442­
08­
0
Naphthalene,
isopropylated
67254­
74­
4
Naphthenic
oils
Liquid
naphthenic
hydrocarbons
from
petroleum.

71820­
39­
8
Paraffin
oils,
oxidized,
calcium
salts
68201­
54­
7
Paraffin
oils,
sulfurized
CAS
No
Substance
Definition
Caveat
277316­
99­
1
Paraffin
waxes
and
Hydrocarbon
waxes,
hydrocracked,
solvent­
dewaxed
A
complex
combination
of
hydrocarbons
obtained
by
treating
a
paraffin
wax
(
prepared
by
the
Fischer­
Tropsch
Process)
with
a
catalytic
hydrocracking
process
followed
by
solvent
dewaxing.
It
consists
predominantly
of
saturated
straight
and
branched
chain
hydrocarbons
having
carbon
numbers
predominantly
in
the
range
of
C20­
44
and
boiling
in
the
range
345.
degree.
C
to
370.
degree.
C
(
653.
degree.
F
to
689.
degree.
F).

68649­
47­
8
Paraffin
waxes
and
Hydrocarbon
waxes,
oxidized,
calcium
sodium
salts
68649­
48­
9
Paraffin
waxes
and
Hydrocarbon
waxes,
oxidized,
lithium
salts
68649­
49­
0
Paraffin
waxes
and
Hydrocarbon
waxes,
oxidized,
lithium
sodium
salts
68815­
10­
1
Petroleum,
sulfurized
68478­
11­
5
Phenols,
petroleum,
sodium
salts
164907­
79­
3
Residues,
petroleum,
vacuum,
asphaltene­
low
A
complex
combination
of
hydrocarbons
obtained
from
the
vacuum
distillation
of
the
residuum
from
the
atomospheric
distillation
of
crude
oil.
It
consists
predominantly
of
hydrocarbons
having
carbon
numbers
greater
than
C25
and
boiling
above
400.
degree.
C
(
752.
degree.
F).

92062­
09­
4
Slack
wax,
petroleum,
hydrotreated
A
complex
combination
of
hydrocarbons
obtained
by
treating
slack
wax
with
hydrogen
in
the
presence
of
a
catalyst.
It
consists
predominantly
of
saturated
straight
and
branched
chain
hydrocarbons
having
carbon
numbers
predominantly
greater
than
C20.

212210­
93­
0
Solvent
naphtha,
petroleum,
heavy
arom.,
distn.
residues
216977­
01­
4
Solvent
naphtha,
petroleum,
heavy
arom.,
middle
fraction,
reaction
products
with
1­
butene,
distn.
residues
68478­
31­
9
Tail
gas,
petroleum,
isomerized
naphtha
fractionates,
hydrogen
sulfide­
free
68477­
23­
6
Tar
acids,
residues,
distillates,
first­
cut
The
residue
from
the
distillation
in
the
range
of
235.
degree.
C
to
355.
degree.
C
(
455.
degree.
F
to
671.
degree.
F)
of
light
carbolic
oil.
