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Inventory Update Rule

Published by U.S. EPA- Office Of Chemical Safety and Pollution Prevention (OCSPP) - Office of Pollution Prevention (OPPT) | U.S. Environmental Protection Agency | Metadata Last Checked: July 29, 2025 | Last Modified: 2009
Information on chemicals manufactured or imported into the United States and listed on the TSCA Chemical Substances Inventory was collected periodically by the EPA as part of the Inventory Update Rule (IUR). This collection began in 1986 and was changed to the Chemical Data Reporting (CDR) rule in 2012.

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