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WHAT YOU NEED TO KNOW ON THE NEW ADDITIONS TO PROP 65: INDIUM TIN OXIDE AND MOLYBDENUM TRIOXIDE

Prop 65, or California’s Proposition 65 list, also referred to as the Safe Drinking Water and Toxic Enforcement Act of 1986, is used to allow Californians to make informed decisions about their exposure to hazardous chemicals which may cause health issues such as cancer, reproductive harm, or birth defects. 

The Prop 65 list now has hundreds of chemicals known to the state of California to cause cancer or to be reprotoxic. Dozens of them are present in consumer products of every households. For example, they are heavy metals, PFAS, or phthalates.

Effective as of March 19, 2021, the Office of Environmental Health Hazard Assessment (OEHHA) has added two chemicals to California’s Prop 65 List: Molybdenum Trioxide and Indium Tin Oxide.

In what Products are the Prop 65 Indium Tin Oxide and Molybdenum Trioxide Likely to be Found?

Prop. 65 Chemical NameCAS No.RiskPossible Applications
Molybdenum Trioxide1313-27-5Cancer – Metal Additives– Pigments– Component of glass, ceramics, and enamels– Flame Retardant for Polyester (PET) and Polyvinyl Chloride (PVC) Plastic Resins Source: https://oehha.ca.gov/media/downloads/crnr/molydenumtrioxide.pdf
Indium Tin Oxide50926-11-9Cancer– Glass and Plastic Screens– Flat-Panel Display (FPD)– Liquid Crystal Display (LCD)– Solar Panels Source:https://www.ncbi.nlm.nih.gov/books/NBK543202/pdf/Bookshelf_NBK543202.pdf

The entire list of Prop 65 substances are updated in Excel, XSV, and Pdf formats, on the California Office of Environmental Health Hazard Assessment (OEHHA) website.

The Takeaways to Comply with the New Prop 65 Substances

Prop 65 March 19 2021 - Molybdenum Trioxide and Indium Tin Oxide

Disclosure of hazardous chemicals is often accomplished using physical and/or online warning labels which are specific to the possible exposure.

Examples include:

Consumer product exposure

Environmental exposure

Occupational exposure

If this sounds applicable to your situation, a risk assessment may be necessary to determine Prop. 65 substances that have to be declared. 

Enviropass is here to assist you in this Prop 65 endeavor. Ask Enviropass for a free online consultation hour