OEHHA expanded the scope of the existing Proposition 65 reproductive toxicity listing for bisphenol S (BPS) by adding the developmental toxicity endpoint (effective December 8, 2025) via the State’s Qualified Experts mechanism (DARTIC). Compliance teams should reassess whether exposures to BPS trigger Prop 65 warning obligations considering the expanded reproductive toxicity endpoint and ensure warnings/supply chain communications remain accurate.
OEHHA added N-Methyl-N-Formylhydrazine to the Proposition 65 list as known to cause cancer. This chemical is now subject to California's warning requirements under Prop 65. Businesses with products containing this substance that may result in exposures in California should evaluate their warning obligations.
OEHHA updated/posted the current Proposition 65 chemical list download resources (PDF/Excel/CSV) on its Proposition 65 List webpage, with the list date shown as December 5, 2025. Compliance teams can use these official files as the authoritative reference for verifying whether a substance is listed and for maintaining internal restricted-substance/warning determinations.
OEHHA posted the latest consolidated 'Proposition 65 List' package (dated December 5, 2025) with downloadable formats (e.g., PDF/Excel/CSV). While this is not itself a new restriction, it is the authoritative consolidated reference used for Prop 65 applicability determinations; compliance teams should use this version (or any newer posted version) as the controlled reference for internal chemical screening and compliance checks.
OEHHA issued a listing notice expanding the existing Proposition 65 reproductive toxicity listing for Bisphenol S (BPS) by adding the developmental toxicity endpoint. This change means Prop 65 warnings/enforcement considerations for BPS exposures now explicitly include developmental toxicity, in addition to previously covered reproductive toxicity endpoints, affecting product hazard assessments and warning determinations for businesses selling into California.
OEHHA is requesting relevant information on p,p-bisphenol chemicals, including ethers and esters of p,p-bisphenols, for possible listing under Proposition 65 as causing reproductive toxicity. OEHHA has selected these chemicals for the Developmental and Reproductive Toxicant Identification Committee (DARTIC) review and is developing hazard identification materials. Stakeholders with relevant toxicity or exposure data should submit information to inform the assessment.
The CPPA announced approval of a major CCPA/CPRA regulations package (approved by OAL) that includes requirements and frameworks for cybersecurity audits, risk assessments, and rules governing automated decisionmaking technology (ADMT), along with updates to existing CCPA regulations. This is directly relevant to Vendor Cybersecurity & Data Privacy because these obligations commonly flow down into vendor/service-provider governance: businesses will need stronger documentation of cybersecurity programs, assessment processes, audit readiness, and risk management for processing activities often performed by vendors (e.g., cloud/SaaS processors). The CPPA announcement states an effective date of Jan 1, 2026, with staged compliance timelines referenced for audit certifications, risk assessment submissions/attestations, and ADMT significant-decision obligations.
OEHHA issued a proposed rulemaking to amend Title 27, California Code of Regulations, section 25705 (No Significant Risk Levels for carcinogens) to add new safe harbor NSRLs: 1‑bromopropane at 54 µg/day and diethanolamine (dermal exposure only) at 6.4 µg/day. OEHHA also issued an extension notice moving the public comment deadline to November 7, 2025. If finalized, these NSRLs would affect Proposition 65 warning determinations and risk assessments for products or workplaces involving these substances, particularly for dermal exposure scenarios for diethanolamine.
OEHHA's Proposition 65 Implementation Team is hosting a webinar titled 'Proposition 65 Compliance Guidance & Regulatory Updates for Businesses' on September 30, 2025. The presentation will provide businesses with an overview of Proposition 65 requirements, recent chemical listings, and practical guidance for meeting compliance obligations. This webinar is designed to help manufacturers, importers, and retailers understand their responsibilities under Prop 65.
OEHHA proposes to adopt No Significant Risk Levels (NSRLs) for 1-bromopropane and diethanolamine (dermal route) by amending Title 27, California Code of Regulations, section 25705(b). Public comment period deadline is October 6, 2025. These safe harbor levels would help businesses determine when Prop 65 warning requirements apply.
OEHHA proposed amendments to Title 27, California Code of Regulations, Section 25705(b) to adopt No Significant Risk Levels (NSRLs) for 1-bromopropane (54 micrograms per day) and diethanolamine for dermal exposure (6.4 micrograms per day). The diethanolamine NSRL applies only to dermal routes of exposure. The public comment period was extended to November 7, 2025 at the request of industry stakeholders.
OEHHA issued a Notice of Proposed Rulemaking to amend Title 27 of the California Code of Regulations, section 25705(b), to add new No Significant Risk Levels (NSRLs) used as Proposition 65 cancer “safe harbor” exposure levels. The proposal would add an NSRL of 54 µg/day for 1-bromopropane and an NSRL of 6.4 µg/day for diethanolamine for dermal exposure only (explicitly not applicable to other exposure routes). OEHHA’s notice sets a public comment deadline of October 6, 2025, and provides that a public hearing will be held only if requested by September 22, 2025. Compliance teams may wish to submit comments and, if adopted, consider how these NSRLs affect internal Prop 65 exposure assessments and warning determinations.
OEHHA adopted a No Significant Risk Level (NSRL) for Titanium Dioxide (airborne, unbound particles of respirable size) under Proposition 65. The NSRL establishes a safe harbor level for cancer risk from inhalation exposure, allowing businesses to determine if exposures require Proposition 65 warnings. The regulation was approved by the Office of Administrative Law on June 18, 2025 and took effect on October 1, 2025.
OEHHA adopted a No Significant Risk Level (NSRL) for titanium dioxide (airborne, unbound particles of respirable size). The NSRL provides a safe harbor level allowing businesses to determine if Prop 65 cancer warning requirements apply for exposures below the NSRL threshold. Effective October 1, 2025.
Effective March 7, 2025, OEHHA added vinyl acetate (CAS 108-05-4) to the Proposition 65 list of chemicals known to cause cancer. The listing followed a determination by the Carcinogen Identification Committee (CIC) at its December 19, 2024 meeting. Businesses that manufacture, distribute, or sell products containing vinyl acetate in California must now provide Proposition 65 warnings for significant exposures unless safe harbor levels are established.
OEHHA listed vinyl acetate under Proposition 65 as a chemical known to cause cancer (listing effective January 3, 2025). The Prop 65 warning requirement for significant exposures becomes enforceable starting January 3, 2026 (one-year grace period typical for new listings). Compliance teams should assess products/operations that may expose California consumers/workers to vinyl acetate and implement compliant Prop 65 warnings and related substantiation/documentation before the enforceability date.
OEHHA issued an official notice listing vinyl acetate on the Proposition 65 list as a chemical known to the State of California to cause cancer. Businesses whose products or operations may result in consumer or occupational exposures to vinyl acetate in California should evaluate whether warnings are required and update compliance documentation and supplier inquiries accordingly.
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.
OEHHA has added vinyl acetate to the Proposition 65 list as a chemical known to the State of California to cause cancer. For compliance teams, this triggers the one-year lead time before consumer-product/occupational exposure warnings are required for significant exposures. Businesses selling products into California should evaluate potential exposures to vinyl acetate and update Proposition 65 warning determinations and labeling/online warning content by the stated warning-effective date.
OEHHA adopted amendments to the Proposition 65 'clear and reasonable warnings' safe-harbor regulations, including updates impacting use and content of short-form warnings (e.g., requiring identification of at least one listed chemical). The amendments are effective January 1, 2025. Compliance teams should update labeling/artwork, online warnings, and related procedures to meet the amended safe-harbor content requirements and transition provisions.