Rule2026-09490
Oxirane, 2-phenyl-, polymer With oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt (1:2) in Pesticide Formulations; Exemption From the Requirement for a Tolerance
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
May 13, 2026
Effective
May 13, 2026
Issuing agencies
Environmental Protection Agency
Abstract
This regulation establishes an exemption from the requirement of a tolerance for residues of oxirane, 2-phenyl-, polymer with oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt (1:2) (CAS Reg. No 2983072-24-6); (also known as oxirane, 2-phenyl-, polymer with oxirane, monooctyl ether, sulphosuccinated, disodium salt) when used as an inert ingredient in a pesticide chemical formulation under 40 CFR 180.960. Spring Regulatory Sciences on behalf of Evonik Corporation submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of oxirane, 2-phenyl-, polymer with oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt (1:2) on food or feed commodities when used in accordance with these exemptions.
Full Text
<html>
<head>
<title>Federal Register, Volume 91 Issue 92 (Wednesday, May 13, 2026)</title>
</head>
<body><pre>
[Federal Register Volume 91, Number 92 (Wednesday, May 13, 2026)]
[Rules and Regulations]
[Pages 26924-26928]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-09490]
=======================================================================
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2025-3360; FRL-13301-01-OCSPP]
Oxirane, 2-phenyl-, polymer With oxirane, mono(hydrogen 2-
sulfobutanedioate), octyl ether, sodium salt (1:2) in Pesticide
Formulations; Exemption From the Requirement for a Tolerance
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes an exemption from the requirement
of a tolerance for residues of oxirane, 2-phenyl-, polymer with
oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt
(1:2) (CAS Reg. No 2983072-24-6); (also known as oxirane, 2-phenyl-,
polymer with oxirane, monooctyl ether, sulphosuccinated, disodium salt)
when used as an inert ingredient in a pesticide chemical formulation
under 40 CFR 180.960. Spring Regulatory Sciences on behalf of Evonik
Corporation submitted a petition to EPA under the Federal Food, Drug,
and Cosmetic Act (FFDCA), requesting an exemption from the requirement
of a tolerance. This regulation eliminates the need to establish a
maximum permissible level for residues of oxirane, 2-phenyl-, polymer
with oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium
salt (1:2) on food or feed commodities when used in accordance with
these exemptions.
DATES: This regulation is effective May 13, 2026. Objections and
requests for hearings must be received on or before July 13, 2026 and
must be filed in accordance with the instructions provided in 40 CFR
part 178 (see also Unit I.C. of this document).
ADDRESSES: The docket for this action, identified by docket
identification (ID) number EPA-HQ-OPP-2025-3360, is available online at
<a href="https://www.regulations.gov">https://www.regulations.gov</a>. Additional information about dockets
generally, along with instructions for visiting the docket in-person,
is available at <a href="https://www.epa.gov/dockets">https://www.epa.gov/dockets</a>.
FOR FURTHER INFORMATION CONTACT: Charles Smith, Registration Division
(7505T), Office of Pesticide Programs, Environmental Protection Agency,
1200 Pennsylvania Ave. NW, Washington, DC 20460-0001; main telephone
number: (202) 566-1030; email address: <a href="/cdn-cgi/l/email-protection#41130507130f2e3528222432012431206f262e37"><span class="__cf_email__" data-cfemail="4c1e080a1e022338252f293f0c293c2d622b233a">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
I. General Information
A. Does this action apply to me?
You may be potentially affected by this action if you are an
agricultural producer, food manufacturer, or pesticide manufacturer.
The following list of North American Industrial Classification System
(NAICS) codes is not intended to be exhaustive, but rather provides a
guide to help readers determine whether this document applies to them.
Potentially affected entities may include:
<bullet> Crop production (NAICS code 111).
<bullet> Animal production (NAICS code 112).
<bullet> Food manufacturing (NAICS code 311).
<bullet> Pesticide manufacturing (NAICS code 32532).
If you have any questions regarding the applicability of this
proposed action to a particular entity, consult the person listed under
FOR FURTHER INFORMATION CONTACT.
B. What is EPA's authority for taking this action?
EPA is issuing this rulemaking under section 408 of the FFDCA, 21
U.S.C. 346a. FFDCA section 408(c)(2)(A)(i) allows EPA to establish an
exemption from the requirement for a tolerance (the legal limit for a
pesticide chemical residue in or on a food) only if EPA determines that
the exemption is ``safe.'' FFDCA section 408(c)(2)(A)(ii) defines
``safe'' to mean that ``there is a reasonable certainty that no harm
will result from aggregate exposure to the pesticide chemical residue,
including all anticipated dietary exposures and all other exposures for
which there is reliable information.'' This includes exposure through
drinking water and in residential settings but does not include
occupational exposure. Pursuant to FFDCA section 408(c)(2)(B), in
establishing or maintaining in effect an exemption from the requirement
of a tolerance, EPA must take into account the factors set forth in
FFDCA section 408(b)(2)(C), which require EPA to give special
consideration to exposure of infants and children to the pesticide
chemical residue in establishing a tolerance and to ``ensure that there
is a reasonable certainty that no harm will result to infants and
children from aggregate exposure to the pesticide chemical residue . .
. .'' Additionally, FFDCA section 408(b)(2)(D) requires that the Agency
consider, among other things, ``available information concerning the
cumulative effects of a particular pesticide's residues'' and
[[Page 26925]]
``other substances that have a common mechanism of toxicity.''
C. How can I file an objection or hearing request?
Under FFDCA section 408(g), 21 U.S.C. 346a(g), any person may file
an objection to any aspect of this regulation and may also request a
hearing on those objections. If you fail to file an objection to the
final rule within the time period specified in the final rule, you will
have waived the right to raise any issues resolved in the final rule.
You must file your objection or request a hearing on this regulation in
accordance with the instructions provided in 40 CFR part 178. To ensure
proper receipt by EPA, you must identify the docket ID number EPA-HQ-
OPP-2025-3360 in the subject line on the first page of your submission.
All objections and requests for a hearing must be in writing and must
be received by the Hearing Clerk on or before July 13, 2026.
EPA's Office of Administrative Law Judges (OALJ), in which the
Hearing Clerk is housed, urges parties to file and serve documents by
electronic means only, notwithstanding any other particular
requirements set forth in other procedural rules governing those
proceedings. See ``Order Urging Electronic Filing and Service,'' dated
December 3, 2025, which can be found at <a href="https://www.epa.gov/system/files/documents/2025-12/2025-12-03-order-urging-electronic-filing-and-service.pdf">https://www.epa.gov/system/files/documents/2025-12/2025-12-03-order-urging-electronic-filing-and-service.pdf</a>. Although EPA's regulations require submission via U.S.
Mail or hand delivery, EPA intends to treat submissions filed via
electronic means as properly filed submissions; therefore, EPA believes
the preference for submission via electronic means will not be
prejudicial. When submitting documents to the OALJ electronically, a
person should utilize the OALJ e-filing system at <a href="https://yosemite.epa.gov/oa/eab/eab-alj_upload.nsf">https://yosemite.epa.gov/oa/eab/eab-alj_upload.nsf</a>.
In addition to filing an objection or hearing request with the
Hearing Clerk as described in 40 CFR part 178, please submit a copy of
the filing (excluding any Confidential Business Information (CBI)) for
inclusion in the public docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a>. Follow
the online instructions for submitting comments. Do not submit
electronically any information you consider to be CBI or other
information whose disclosure is restricted by statute. If you wish to
include CBI in your request, please follow the applicable instructions
at <a href="https://www.epa.gov/dockets/commenting-epa-dockets#rules">https://www.epa.gov/dockets/commenting-epa-dockets#rules</a> and clearly
mark the information that you claim to be CBI. Information not marked
confidential pursuant to 40 CFR part 2 may be disclosed publicly by EPA
without prior notice.
II. Petition for Exemption
In the Federal Register of January 28, 2026 (91 FR 3701) (FRL-
12474-11-OCSPP), EPA published a notice pursuant to FFDCA section 408,
21 U.S.C. 346a, announcing the receipt of a pesticide petition (PP IN-
11999) filed by Spring Regulatory Sciences on behalf of Evonik
Corporation, 7801 Whitepine Road, Richmond, VA 23237. The petition
requested that 40 CFR 180.960 be amended by establishing an exemption
from the requirement of a tolerance for residues of oxirane, 2-phenyl-,
polymer with oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether,
sodium salt (1:2) (CAS Reg. No 2983072-24-6). That document included a
summary of the petition prepared by Spring Regulatory Sciences on
behalf of Evonik Corporation, the petitioner, which is available in the
docket.
The Agency received one comment from a private citizen expressing
concerns regarding the Agency not fully evaluating submitted data, the
need for aggregate and cumulative exposure considerations, and
application of the Food Quality Protection Act (FQPA) safety factor as
well as concerns for chemical-resistant pests. The notice EPA published
on January 28, 2026, is a procedural action through which the Agency
gives notice of the receipt of a petition and solicits public comment
prior to completing its scientific evaluation. The statement that the
Agency has not fully evaluated the submitted data reflects this
statutory design and does not indicate a deficiency in the petition. As
outlined in the following sections of this final rule, the Agency has
made a safety determination based on the low-risk polymer criteria
under 40 CFR 723.250. Additionally, aggregate exposure, cumulative
effects, and the need for the FQPA safety factor for infants and
children are addressed within this final rule. Since no toxicity
endpoints of concern were identified, the FQPA safety factor was not
used and aggregate risks were assessed qualitatively. No common
mechanisms of toxicity warranting a cumulative assessment were
identified. For more details, please see units IV.A. through IV.D. of
this document. To the extent the comment raises issues pertaining to
other regulatory actions, the Agency is responding herein only as they
relate to the action at hand. The commenter is encouraged to submit
comments on those separate actions through the appropriate dockets,
provided the applicable comment periods remain open.
III. Inert Ingredient Definition
Inert ingredients are all ingredients that are not active
ingredients as defined in 40 CFR 153.125 and include, but are not
limited to, the following types of ingredients (except when they have a
pesticidal efficacy of their own): solvents such as alcohols and
hydrocarbons; surfactants such as polyoxyethylene polymers and fatty
acids; carriers such as clay and diatomaceous earth; thickeners such as
carrageenan and modified cellulose; wetting, spreading, and dispersing
agents; propellants in aerosol dispensers; microencapsulating agents;
and emulsifiers. The term ``inert'' is not intended to imply
nontoxicity; the ingredient may or may not be chemically active.
Generally, EPA has exempted inert ingredients from the requirement of a
tolerance based on the low toxicity of the individual inert
ingredients.
IV. Final Tolerance Actions
A. Aggregate Risk Assessment and Determination of Safety
EPA establishes exemptions from the requirement of a tolerance only
in those cases where it can be shown that the risks from aggregate
exposure to pesticide chemical residues under reasonably foreseeable
circumstances will pose no appreciable risks to human health. In order
to determine the risks from aggregate exposure to pesticide inert
ingredients, the Agency considers the toxicity of the inert in
conjunction with possible exposure to residues of the inert ingredient
through food, drinking water, and through other exposures that occur as
a result of pesticide use in residential settings. If EPA is able to
determine that a finite tolerance is not necessary to ensure that there
is a reasonable certainty that no harm will result from aggregate
exposure to the inert ingredient, an exemption from the requirement of
a tolerance may be established.
Consistent with FFDCA section 408(b)(2)(D), EPA has reviewed the
available scientific data and other relevant information in support of
this action. EPA has sufficient data to assess the hazards of and to
make a determination on aggregate exposure for oxirane, 2-phenyl-,
polymer with oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether,
sodium salt (1:2) including exposure resulting from the exemption
established by this action. EPA's assessment of exposures and risks
associated with oxirane, 2-
[[Page 26926]]
phenyl-, polymer with oxirane, mono(hydrogen 2-sulfobutanedioate),
octyl ether, sodium salt (1:2) follows.
B. Low Risk Polymer Criteria
In the case of certain chemical substances that are defined as
polymers, the Agency has established a set of criteria to identify
categories of polymers expected to present minimal or no risk. The
definition of a polymer is given in 40 CFR 723.250(b) and the exclusion
criteria for identifying these low-risk polymers are described in 40
CFR 723.250(d). Oxirane, 2-phenyl-, polymer with oxirane, mono(hydrogen
2-sulfobutanedioate), octyl ether, sodium salt (1:2) conforms to the
definition of a polymer given in 40 CFR 723.250(b) and meets the
following criteria that are used to identify low-risk polymers.
1. The polymer is not a cationic polymer nor is it reasonably
anticipated to become a cationic polymer in a natural aquatic
environment.
2. The polymer does contain as an integral part of its composition
at least two of the atomic elements carbon, hydrogen, nitrogen, oxygen,
silicon, and sulfur.
3. The polymer does not contain as an integral part of its
composition, except as impurities, any element other than those listed
in 40 CFR 723.250(d)(2)(ii).
4. The polymer is neither designed nor can it be reasonably
anticipated to substantially degrade, decompose, or depolymerize. An
available biodegradation study supports that oxirane, 2-phenyl-,
polymer with oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether,
sodium salt (1:2) is not readily biodegradable (MRID 52502501).
5. The polymer is manufactured or imported from monomers and/or
reactants that are already included on the TSCA Chemical Substance
Inventory or manufactured under an applicable TSCA section 5 exemption.
6. The polymer is not a water absorbing polymer with a number
average molecular weight (MW) greater than or equal to 10,000 Daltons.
7. The polymer does not contain certain perfluoroalkyl moieties
consisting of a CF3- or longer chain length as listed in 40 CFR
723.250(d)(6).
Additionally, the polymer also meets as required the following
exemption criteria: specified in 40 CFR 723.250(e):
<bullet> The polymer's number average MW of 1,900 Daltons is
greater than 1,000 and less than 10,000 Daltons.
<bullet> The polymer contains less than 10% oligomeric material
below MW 500 and less than 25% oligomeric material below MW 1,000.
<bullet> The polymer contains only reactive functional groups
listed in 40 CFR 723.250(e)(1)(ii)(A).
Thus, oxirane, 2-phenyl-, polymer with oxirane, mono(hydrogen 2-
sulfobutanedioate), octyl ether, sodium salt (1:2) meets the criteria
for a polymer to be considered low risk under 40 CFR 723.250. Based on
its conformance to the criteria in this unit, no mammalian toxicity is
anticipated from dietary, inhalation, or dermal exposure to oxirane, 2-
phenyl-, polymer with oxirane, mono(hydrogen 2-sulfobutanedioate),
octyl ether, sodium salt (1:2).
C. Exposure Assessment
For the purposes of assessing potential exposure under this
exemption, EPA considered that oxirane, 2-phenyl-, polymer with
oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt
(1:2) could be present in all raw and processed agricultural
commodities and drinking water, and that non-occupational non-dietary
exposure was possible. The number average MW of oxirane, 2-phenyl-,
polymer with oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether,
sodium salt (1:2) is 1,900 Daltons. Generally, a polymer of this size
would be poorly absorbed through the intact gastrointestinal tract or
through intact human skin. Since oxirane, 2-phenyl-, polymer with
oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt
(1:2) conforms to the criteria that identify a low-risk polymer, there
are no concerns for risks associated with any potential exposure
scenarios that are reasonably foreseeable. The Agency has determined
that a tolerance is not necessary to protect the public health.
D. Cumulative Effects From Substances With a Common Mechanism of
Toxicity
Section 408(b)(2)(D)(v) of FFDCA requires that, when considering
whether to establish, modify, or revoke a tolerance, the Agency
consider ``available information'' concerning the cumulative effects of
a particular pesticide's residues and ``other substances that have a
common mechanism of toxicity.''
EPA has not found oxirane, 2-phenyl-, polymer with oxirane,
mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt (1:2) to
share a common mechanism of toxicity with any other substances, and
oxirane, 2-phenyl-, polymer with oxirane, mono(hydrogen 2-
sulfobutanedioate), octyl ether, sodium salt (1:2) does not appear to
produce a toxic metabolite produced by other substances. For the
purposes of this tolerance exemption, therefore, EPA has assumed that
oxirane, 2-phenyl-, polymer with oxirane, mono(hydrogen 2-
sulfobutanedioate), octyl ether, sodium salt (1:2) does not have a
common mechanism of toxicity with other substances. For information
regarding EPA's efforts to determine which chemicals have a common
mechanism of toxicity and to evaluate the cumulative effects of such
chemicals, see EPA's website at <a href="https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/cumulative-assessment-risk-pesticides">https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/cumulative-assessment-risk-pesticides</a>.
E. Additional Safety Factor for the Protection of Infants and Children
Section 408(b)(2)(C) of FFDCA provides that EPA shall apply an
additional tenfold (10X) margin of safety for infants and children in
the case of threshold effects to account for prenatal and postnatal
toxicity and the completeness of the database on toxicity and exposure
unless EPA determines, based on reliable data, that a different margin
of safety will be safe for infants and children. Due to the expected
low toxicity of oxirane, 2-phenyl-, polymer with oxirane, mono(hydrogen
2-sulfobutanedioate), octyl ether, sodium salt (1:2), EPA has not used
a safety factor analysis to assess the risk. For the same reasons no
additional safety factor is needed for assessing risk to infants and
children.
F. Determination of Safety
Based on the conformance to the criteria used to identify a low-
risk polymer, EPA concludes that there is a reasonable certainty of no
harm to the U.S. population, including infants and children, from
aggregate exposure to residues of oxirane, 2-phenyl-, polymer with
oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether, sodium salt
(1:2).
G. Analytical Enforcement Methodology
An analytical method is not required for enforcement purposes since
the Agency is establishing an exemption from the requirement of a
tolerance without any numerical limitation.
H. Conclusion
Accordingly, EPA finds that exempting residues of oxirane, 2-
phenyl-, polymer with oxirane, mono(hydrogen 2-sulfobutanedioate),
octyl ether, sodium salt (1:2) from the requirement of a tolerance will
be safe.
V. Statutory and Executive Order Reviews
Additional information about these statutes and Executive Orders
can be
[[Page 26927]]
found at <a href="https://www.epa.gov/regulations/and-executive-orders">https://www.epa.gov/regulations/and-executive-orders</a>.
A. Executive Order 12866: Regulatory Planning and Review
This action is exempt from review under Executive Order 12866 (58
FR 51735, October 4, 1993), because it establishes or modifies a
pesticide tolerance or a tolerance exemption under FFDCA section 408 in
response to a petition submitted to the Agency. The Office of
Management and Budget (OMB) has exempted these types of actions from
review under Executive Order 12866.
B. Executive Order 14192: Unleashing Prosperity Through Deregulation
Executive Order 14192 (90 FR 9065, February 6, 2025) does not apply
because actions that establish a tolerance under FFDCA section 408 are
exempted from review under Executive Order 12866.
C. Paperwork Reduction Act (PRA)
This action does not impose an information collection burden under
the PRA 44 U.S.C. 3501 et seq., because it does not contain any
information collection activities.
D. Regulatory Flexibility Act (RFA)
This action is not subject to the RFA, 5 U.S.C. 601 et seq. The RFA
applies only to rules subject to notice and comment rulemaking
requirements under the Administrative Procedure Act (APA), 5 U.S.C.
553, or any other statute. This rule is not subject to the APA but is
subject to FFDCA section 408(d), which does not require notice and
comment rulemaking to take this action in response to a petition.
E. Unfunded Mandates Reform Act (UMRA)
This action does not contain an unfunded mandate of $100 million or
more (in 1995 dollars and adjusted annually for inflation) as described
in UMRA, 2 U.S.C. 1531-1538, and does not significantly or uniquely
affect small governments. The action imposes no enforceable duty on any
state, local or tribal governments or the private sector.
F. Executive Order 13132: Federalism
This action does not have federalism implications as specified in
Executive Order 13132 (64 FR 43255, August 10, 1999), because it will
not have substantial direct effects on the States, on the relationship
between the national government and the States, or on the distribution
of power and responsibilities among the various levels of government.
G. Executive Order 13175: Consultation and Coordination With Indian
Tribal Governments
This action does not have Tribal implications as specified in
Executive Order 13175 (65 FR 67249, November 9, 2000), because it will
not have substantial direct effects on Tribal governments, on the
relationship between the Federal government and the Indian Tribes, or
on the distribution of power and responsibilities between the Federal
government and Indian Tribes.
H. Executive Order 13045: Protection of Children From Environmental
Health Risks and Safety Risks
This action is not subject to Executive Order 13045 (62 FR 19885,
April 23, 1997) because it is not a significant regulatory action under
section 3(f)(1) of Executive Order 12866 (See Unit VI.A.), and because
EPA does not believe the environmental health or safety risks addressed
by this action present a disproportionate risk to children.
However, EPA's 2026 Policy on Children's Health applies to this
action. This rule finalizes tolerance actions under the FFDCA, which
requires EPA to give special consideration to exposure of infants and
children to the pesticide chemical residue in establishing a tolerance
and to ``ensure that there is a reasonable certainty that no harm will
result to infants and children from aggregate exposure to the pesticide
chemical residue . . .'' (FFDCA 408(b)(2)(C)). The Agency's
consideration is documented in the pesticide-specific registration
review documents, located in the applicable docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a>.
I. Executive Order 13211: Actions Concerning Regulations That
Significantly Affect Energy Supply, Distribution or Use
This action is not subject to Executive Order 13211 (66 FR 28355)
(May 22, 2001) because it is not a significant regulatory action under
Executive Order 12866.
J. National Technology Transfer Advancement Act (NTTAA)
This action does not involve technical standards that would require
Agency consideration under NTTAA section 12(d), 15 U.S.C. 272.
K. Congressional Review Act (CRA)
This action is subject to the CRA, 5 U.S.C. 801 et seq., and EPA
will submit a rule report to each House of the Congress and to the
Comptroller General of the United States. This action is not a ``major
rule'' as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection, Administrative practice and procedure,
Agricultural commodities, Pesticides and pests, Reporting and
recordkeeping requirements.
Dated: May 7, 2026.
Charles Smith,
Director, Registration Division, Office of Pesticide Programs.
For the reasons stated in the preamble, 40 CFR chapter I is amended
as follows:
PART 180--TOLERANCES AND EXEMPTIONS FOR PESTICIDE CHEMICAL RESIDUES
IN FOOD
0
1. The authority citation for part 180 continues to read as follows:
Authority: 21 U.S.C. 321(q), 346a and 371.
0
2. Amend Sec. 180.960 by adding the polymer, ``oxirane, 2-phenyl-,
polymer with oxirane, mono(hydrogen 2-sulfobutanedioate), octyl ether,
sodium salt (1:2). Minimum number average molecular weight (in amu),
1,900 Daltons'', in alphabetical order to table 1 to read as follows:
Sec. 180.960 Polymers; exemptions from the requirement of a
tolerance.
* * * * *
Table 1 to Sec. 180.960
------------------------------------------------------------------------
Polymer CAS No.
------------------------------------------------------------------------
* * * * * * *
oxirane, 2-phenyl-, polymer with oxirane, 2983072-24-6
mono(hydrogen 2-sulfobutanedioate), octyl ether,
sodium salt (1:2). Minimum number average molecular
weight (in amu), 1,900 Daltons......................
[[Page 26928]]
* * * * * * *
------------------------------------------------------------------------
[FR Doc. 2026-09490 Filed 5-12-26; 8:45 am]
BILLING CODE 6560-50-P
</pre><script data-cfasync="false" src="/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js"></script></body>
</html>Indexed from Federal Register on May 13, 2026.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.