1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-Hexamethylcyclopenta [g]-2-Benzopyran (HHCB) and Phthalic Anhydride Draft Risk Evaluations Under the Toxic Substances Control Act (TSCA); Notice of Availability and Request for Comment
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- Title
- 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-Hexamethylcyclopenta [g]-2-Benzopyran (HHCB) and Phthalic Anhydride Draft Risk Evaluations Under the Toxic Substances Control Act (TSCA); Notice of Availability and Request for Comment
Federal Register for Tuesday, April 14, 2026 (91 FR 19134) [FRL-13309-01-OCSPP]
- Posted
- Apr 14, 2026
- Comment period
- Apr 14, 2026 – Jun 16, 2026
- FR Doc
- 2026-07167
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- Jun 15, 2026Comment submitted by The Dow Chemical CompanySupportBusiness📎 Attachment
The Dow Chemical Company provides technical feedback on the EPA's draft risk evaluation for Phthalic Anhydride, specifically regarding air monitoring methods and exposure limits. They support the EPA's scientific approach to determining the Short-Term Exposure Value (STEV) but argue that a Time Weighted Average (TWA) limit may not be necessary for a respiratory sensitizer.
Read comment → - Jun 8, 2026Comment submitted by The Dow Chemical CompanySupportBusiness📎 Attachment
The Dow Chemical Company provides technical feedback on the EPA's draft risk evaluation for Phthalic Anhydride, specifically regarding air monitoring methods and exposure limits. They support the EPA's scientific approach to determining the Short-Term Exposure Value (STEV) but argue that a Time Weighted Average (TWA) limit may not be necessary for a respiratory sensitizer.
Read comment →