California Proposition 65

California Proposition 65 (Prop. 65)

The California Proposition 65 regulation is officially known as the Safe Drinking Water and Toxic Enforcement Act of 1986. It requires the state of California to list all chemicals that cause deformities, cancer or other reproductive harm. In addition, all companies are required to label products containing significant amounts of these chemicals. This is considered a warning to the people of California.

All of the chemicals listed have been managed by the California Office of Environmental Health Hazard Assessment (OEHHA).

The list is constantly being expanded with further substances and threshold values. The last update took place on December 17th, 2021, where the following chemicals were added:


Type of Toxicity

CAS No. 

2-Ethylhexyl acrylate cancer 103-11-7
Methyl acrylate cancer 96-33-3
Tetrahydrofuran cancer 109-99-9
Trimethylolpropane triacrylate, technical grade cancer

Find out more about other regulations: