{"url_path":"/register/2026-05-18/2026-09916","section_key":"summary","section_title":"Superfund Tax on Chemical Substances; Request To Modify List of Taxable Substances; Notice of Filing for Methyl Methacrylate-ethyl Methacrylate-methacrylic Acid Copolymer in a Styrene Solution (x=75.76, y=8.46, z=1, s=168.4); Hearing","topic":"register","document":{"doc_type":"Notice","doc_date":"2026-05-18","source_url":"https://www.federalregister.gov/documents/2026/05/18/2026-09916/superfund-tax-on-chemical-substances-request-to-modify-list-of-taxable-substances-notice-of-filing","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"Treasury Department"},"word_count":106,"has_tables":false,"body_markdown":"# Superfund Tax on Chemical Substances; Request To Modify List of Taxable Substances; Notice of Filing for Methyl Methacrylate-ethyl Methacrylate-methacrylic Acid Copolymer in a Styrene Solution (x=75.76, y=8.46, z=1, s=168.4); Hearing\n\n**Type:** Notice\n**Published:** 2026-05-18\n**Citation:** 91 FR 28759\n**Agencies:** Treasury Department, Internal Revenue Service\n**Source:** https://www.federalregister.gov/documents/2026/05/18/2026-09916/superfund-tax-on-chemical-substances-request-to-modify-list-of-taxable-substances-notice-of-filing\n\n## Abstract\nThis document provides a notice of public hearing on the notice of filing published in the Federal Register on Wednesday, January 14, 2026. This notice of filing announced that a petition has been filed requesting that methyl methacrylate-ethyl methacrylate- methacrylic acid copolymer in a styrene solution ((C<INF>5</INF>H<INF>8</INF>O<INF>2</INF>)<INF>x</INF>- (C<INF>6</INF>H<INF>10</INF>O<INF>2</INF>)<INF>y</INF>- (C<INF>4</INF>H<INF>6</INF>O<INF>2</INF>)<INF>z</INF>- (C<INF>8</INF>H<INF>8</INF>)<INF>s</INF>; x=75.76, y=8.46, z=1, s=168.4) be added to the list of taxable substances."}