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Bisphenol S (BPS) Listed Under Proposition 65 for Reproductive Toxicity
California Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986)Office of Environmental Health Hazard Assessment (OEHHA)California
Announced
Jan 3, 2025
Effective
Jan 3, 2025
Implementation
Jan 3, 2025
Description
OEHHA has added Bisphenol S (BPS) to the Proposition 65 list for reproductive toxicity (male and female endpoints). Products containing BPS that may cause significant exposures require Proposition 65 warnings when sold in California. BPS is commonly used as a BPA replacement in thermal paper, plastics, and other consumer products.
Sources
Key Findings
Bisphenol S (BPS) Listed Under Proposition 65 for Reproductive Toxicity
# Bisphenol S (BPS) Added to the Proposition 65 List for Reproductive Toxicity - OEHHA [Skip to main content](https://oehha.ca.gov/proposition-65/crnr/bisphenol-s-bps-added-proposition-65-list-reproductive-toxicity#main-content) [Skip to Main Content](https://oehha.ca.gov/proposition-65/crnr/bisphenol-s-bps-added-proposition-65-list-reproductive-toxicity#main-content) [CA.gov CA.gov](https://ca.gov/) Official website
Bisphenol S (BPS) Listed Under Proposition 65 for Reproductive Toxicity
s) determination that the chemical was clearly shown to cause male reproductive harm. This expanded the original 2023 listing for female reproductive toxicity. Bisphenol S (BPS) Added for Developmental Toxicity Effective 8 December 2025 OEHHA has added the developmental toxicity endpoint to the existing reproductive toxicity listing for bisphenol S (BPS). This action was taken through the “State’s Qualified Experts”