TCPP and TDCPP Prop 65 listings—implications for industrial formulators and halogen-free alternative options.
California’s Safe Drinking Water and Toxic Enforcement Act (Prop 65) requires businesses to provide warnings about significant exposures to chemicals that cause cancer or reproductive harm. Both TCPP and TDCPP are listed.
A Prop 65 listing does not ban the chemical. It requires that products containing it above defined exposure thresholds carry a warning label for California consumers. The key question is whether your finished product, as manufactured and used, creates a significant exposure under the defined thresholds.
For purely industrial B2B supply, Prop 65 labeling obligations typically do not apply. The obligation generally arises when the chemical reaches a consumer-facing end product. However, this determination depends on the specific application and exposure pathway—consult qualified legal counsel for any compliance decisions.
Prop 65 is most likely to affect your operations if: your product ends up in a consumer-facing application (furniture foam, mattresses, children’s products); your customer sells into California and needs to assess their own obligations; or your specifications are under review by a customer’s EH&S or regulatory team.
If Prop 65 compliance pressure is affecting your formulation, Flamisol supplies TEP (triethyl phosphate) and MPP (melamine polyphosphate) as halogen-free alternatives for rigid PU and engineering plastic applications where TCPP or TDCPP are currently used.
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