CA Proposition 65 – Settlements/Judgements Summary for Q4 2025
December 2025: OEHHA Listing PFOS and its Salts as a Carcinogen Under CA Proposition 65 click to view December 2025: OEHHA Issues Notice of Modification of Proposed Amendments to CA Proposition 65 Short Form Warning click to view November 2025: California Proposition 65 Settlements click to view
Diisononyl Phthalate (DINP) - Proposition 65 Warnings Website
DINP is also used in some non-PVC products, such as some inks and pigments, adhesives, sealants, paints and lacquers. California law prohibits the manufacture, sale, or distribution of toys and child care articles intended for the use of a child under 3 years old if that product can be placed in the child’s mouth and it contains DINP at levels greater than 0.1%.
Diisononyl Phthalate (DINP) - OEHHA
Proposition 65 Chemicals Considered or Listed Under Proposition 65 Diisononyl Phthalate (DINP) Diisononyl Phthalate (DINP) More information about Diisononyl Phthalate Chemical Status Cancer: Currently listed Chemical Listing Details Cancer Safe Harbor Levels Documents, Presentations, and Publications Cancer:
About DINP and California Proposition 65 - Medline
DINP (Diisononyl phthalate) is a phthalate plasticizer used in the manufacture of many vinyl (polyvinyl chloride/PVC) products, including electrical wire, coated fabrics, automotive parts, vinyl flooring, footwear, and medical examination gloves, to make them pliable. CA Prop 65 – DINP
ACC challenges listing DINP under Proposition 65
In a press release published on August 17, 2025, industry association the American Chemistry Council (ACC) announced that it has filed a petition with the US state of California’s Supreme Court challenging the listing of diisononyl phthalate (DINP; CAS 28553-12-0) under the state’s Proposition 65 chemicals regulation. ACC had previously challenged the listing through a
- Why is DINP on the Proposition 65 list?
- DINP is on the Proposition 65 list because it can cause cancer. Exposure to DINP may increase the risk of cancer. Proposition 65 requires businesses to determine if they must provide a warning about exposures to listed chemicals. What is DINP?
- What is Prop 65 & how does it affect California products?
- As a result of Prop 65, manufacturers selling products containing DINP in California are required to either remove DINP from their products or provide a clear and reasonable warning to customers prior to purchase and/or use by December 20, 2014.
- Why is DIDP regulated under Prop 65?
- DIDP (di-isodecyl phthalate): DIDP is regulated under Prop 65 because of concerns regarding birth defects if exposed during pregnancy, or reproductive harm. DINP (diisononyl phthalate): DINP is regulated under Prop 65 because it can cause or increase the risk of cancer.
- Does Proposition 65 require a warning?
- Proposition 65 requires businesses to determine if they must provide a warning about exposures to listed chemicals. What is DINP?
- DINP belongs to a family of chemicals called phthalates, which are added to some plastics to make them flexible.
- What is Proposition 65 and how does it affect businesses?
- Proposition 65 requires businesses to provide warnings about significant exposures to chemicals that cause cancer, birth defects, or other reproductive harm, unless the level of exposure to the chemical is below the regulatory safe harbor level.
- Why is DBP included on the Prop 65 list?
- DBP (di-n-butyl phthalate): DBP is included on the Prop 65 list due to its potential reproductive toxicity. Exposure during pregnancy has been associated with child developmental issues. DEHP (di (2-ethylhexyl)phthalate): The inclusion of DEHP on the Prop 65 list is primarily due to its role as a carcinogen and an endocrine disruptor.
