Changeflow GovPing Environment Draft ADME-B Modeling for HHCB
Routine Guidance Added Draft

Draft ADME-B Modeling for HHCB

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Summary

EPA has released a draft ADME-B (Absorption, Distribution, Metabolism, Excretion-Bioaccumulation) modeling document for HHCB (a synthetic musk compound used in fragrances). The document is available for public review. This draft appears to support EPA's chemical risk assessment process under TSCA (Toxic Substances Control Act).

What changed

EPA has published a draft ADME-B (Absorption, Distribution, Metabolism, Excretion - Bioaccumulation) modeling document for HHCB (Galaxolide), a synthetic fragrance compound. The document presents EPA's scientific methodology for modeling the bioaccumulation potential of this chemical substance.\n\nAffected parties including chemical manufacturers, fragrance producers, and downstream product manufacturers should review the draft modeling approach to understand how EPA may assess HHCB's environmental and health risks. Stakeholders may have opportunities to provide scientific input on the methodology.

What to do next

  1. Review the draft ADME-B modeling document for HHCB
  2. Submit comments to EPA as applicable

Archived snapshot

Apr 16, 2026

GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.

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Last updated

Classification

Agency
EPA
Instrument
Guidance
Legal weight
Non-binding
Stage
Draft
Change scope
Minor
Document ID
EPA-HQ-OPPT-2026-1189-0077
Docket
EPA-HQ-OPPT-2026-1189

Who this affects

Applies to
Chemical manufacturers Manufacturers Government agencies
Industry sector
3241 Chemical Manufacturing
Activity scope
Chemical risk assessment Bioaccumulation modeling Fragrance compound evaluation
Geographic scope
United States US

Taxonomy

Primary area
Environmental Protection
Operational domain
Compliance
Topics
Chemical Safety Consumer Protection

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