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The New California Proposition 65 List

In 2021, the Office of Environmental Health Hazard Assessment (OEHHA) added a total of 8 new substances to the California Proposition 65 list. Interestingly, some of them are likely to be present in consumer and professional products. For example, you will find ‘where used’ details in the table below:

8 New Chemicals - Examples of Where Used

ChemicalType of ToxicityCAS No.Date of InclusionWhere Used (Examples)
2-Ethylhexyl acrylatecancer103-11-72021-12-17
  • Monomer for plastics, protective coatings, paper treatment; in water-based paints
  • In vinyl acetate and vinyl chloride copolymerization

Source: https://pubchem.ncbi.nlm.nih.gov/compound/2-Ethylhexyl-acrylate#section=Methods-of-Manufacturing

Indium tin oxidecancer50926-11-92021-03-19

Used in producing conductive films on glass and plastic panels in:

    • electronic devices,
    • flat-panel displays (FPD),
    • glass doors of supermarket freezers
    • liquid crystal displays (LCD)
    • photovoltaics
    • polymer-based electronics
    • solar panels
    • touch screens
    • windows


  • https://www.ncbi.nlm.nih.gov/books/NBK543202/pdf/Bookshelf_NBK543202.pdf
  • https://ui.adsabs.harvard.edu/abs/1999JAP….86.6451K
  • https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6379771/
Methyl acrylatecancer96-33-32021-12-17
  • Chemical intermediate in the production of surface coatings, in the leather, paper, and textile industries.
  • Can be a component of adhesives, lacquers, paints, plastic (acrylic) films

Source: https://pubchem.ncbi.nlm.nih.gov/compound/Methyl-acrylate#section=Uses

Molybdenum trioxidecancer1313-27-52021-03-19
  • Steel additive and a corrosion-resistant metal alloys additive
  • Industrial catalyst,
  • Pigment especially for coloring animal fibers, hair, lacquers, paint 
  • Crop nutrient,
  • Component of ceramics, glass, and enamels
  • Flame retardant for polyester (PE) and polyvinyl chloride (PVC) plastic resins, and chemical agent.


  • https://oehha.ca.gov/media/downloads/crnr/molydenumtrioxide.pdf
  • https://pubchem.ncbi.nlm.nih.gov/compound/Molybdenum-trioxide#section=Probable-Routes-of-Human-Exposure
  • https://www.chemicalbook.com/ChemicalProductProperty_EN_CB6180308.htm
Perfluorononanoic acid (PFNA) and its saltsmaleVarious2021-12-31
  • Fluoroelastomer production and cardboard, fire-fighting foams, paper, (adhesives and food packaging), and photographic industry, 
  • Similar to PFOA.

Source: https://echa.europa.eu/documents/10162/e9cddee6-3164-473d-b590-8fcf9caa50e7

Perfluorooctane sulfonic acid (PFOS) and its salts and transformation and degradation precursorscancerVarious2021-12-24
  • In surface protection products such as carpet and clothing treatments
  • Coating for paper and cardboard packaging.
  • In fire-fighting foams.


  • https://oehha.ca.gov/chemicals/perfluorooctane-sulfonate-pfos
  • https://oehha.ca.gov/media/downloads/crnr/pfoshid092421.pdf
  • Solvent for high polymers, natural and synthetic resins, especially polyvinyl chloride (PVC), rubber, in preparation of adhesives, lacquers, printing inks, and other coatings (top coating solutions).
  • Chemical intermediate.

Source: https://pubchem.ncbi.nlm.nih.gov/compound/Tetrahydrofuran#section=Household-Products

Trimethylolpropane triacrylate, technical gradecancerVarious2021-12-17
  • In the production of ultraviolet-curable inks, electron beam irradiation-curable coatings, polymers, and resins;
  • Photoresist component of photopolymer and flexographic printing plates;
  • Ingredient in acrylic glues, adhesives, and anaerobic sealants.
  • In paper and wood impregnates, wire and cable extrusion, polymer-impregnated concrete, and polymer concrete structural composites.

Source: https://pubchem.ncbi.nlm.nih.gov/compound/Trimethylolpropane-triacrylate#section=Uses

PFAS Substances in the California Proposition 65 List

It should be noted that the following substances are also PFAS:

  • Perfluorononanoic acid (PFNA) and its salts
  • Perfluorooctane sulfonic acid (PFOS) and its salts and transformation and degradation precursors

Undoubtedly, the USA, the European Union, and other countries are increasingly restricting PFAS.

California Proposition 65

What if a Product Contains a Chemical on the California Proposition 65 List

Because of the Right to Know the principle, products containing Proposition 65 substances are subject to a safe harbor warning. As a result, manufacturers should assess the products against these substances, and maintain the documentation accordingly.

The Safe Drinking Water and Toxic Enforcement Act of 1986 detail the Prop. 65 requirements. Additionally, the updated California Proposition 65 list is available on the OEHHA website.

Consequently, Enviropass has updated the Product Environmental Compliance Form (EPEC), to help you audit your supply chain with the latest California Proposition 65 List. 

We are here to assist you. Should you have any questions, do not hesitate and contact one of the Enviropass experts.