Prop65 Changes Effective August 11, 2023
California Proposition 65 Added 3 New Substances
Changes to the List
According to the OEHHA website "Effective August 11, 2023, the Office of Environmental Health Hazard Assessment (OEHHA) is adding anthracene (CAS RN 120-12-7), 2-bromopropane (CAS RN 75-26-3), and dimethyl hydrogen phosphite (CAS RN 868-85-9) to the list of chemicals known to the State of California to cause cancer under the Safe Drinking Water and Toxic Enforcement Act of 1986, sections 25249.5 et seq. of the Health and Safety Code (HSC), otherwise known as Proposition 65. The listing of these chemicals is pursuant to the “Labor Code” listing mechanism (HSC section 25249.8(a); Title 27 Cal. Code of Regs. section 25904)."
Anthracene
Anthracene also known as (CAS RN 120-12-7) is a solid polycyclic aromatic hydrocarbon (PAH) of formula C14H10, consisting of three fused benzene rings. It is a component of coal tar. Anthracene is used in the production of the red dye alizarin and other dyes. Anthracene is colorless but exhibits a blue (400–500 nm peak) fluorescence under ultraviolet radiation.[13]
Anthracene is commonly found in coal tar, organic semiconductors, and as a scintillator for high energy particles. Some plastics such as polyvinyltoluene may also contain anthracene. Common uses include UV tracer for conformal coatings in circuit boards, wood preservatives, insecticides, and other coating materials.
2-Bromopropane
2-Bromopropane, also known as (CAS RN 75-26-3) isopropyl bromide and 2-proply bromide is the halogenated hydrocarbon with the formula CH3CHBrCH3. It is a colorless liquid. It is used for introducing the isopropyl functional group in organic synthesis. 2-Bromopropane is prepared by heating isopropanol with hydrobromic acid.[3]
2-Bromopropane is sometimes used as an alternative to ozone-depleting cleaning solvents such as chlorofluorocarbons. 2-Bromopropane is prepared by heating isopropanol with hydrobromic acid.
Dimethyl Hydrogen Phosphite
Dimethyl hydrogen phosphite (CAS RN 868-85-9) is used as a flame retardant on nylon 6 fibers and as a chemical intermediate in the production of pesticides and in lubricant additives and adhesives.
Next Steps to Compliance
With every addition to the California Proposition 65 chemical list, companies need to work with their engineers and poll their supply chains to determine the presence of each chemical. If the CAS number is present, the next step is to determine the amount of the chemical present in a given product and assess the level of exposure to consumers and/or employees.
If the level of exposure exceeds the set limits, then a Proposition 65 warning label must be visable before a consumer purchases the product and as part of the product documentation.
If the limit of exposure exceeds the set limits in a work environment in the state of California, then signage must be placed where it is visible to workers.
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