Phthalates

Phthalates are a group of plasticiser chemicals listed under Proposition 65 as reproductive toxicants. Multiple phthalates are individually listed: Di(2-ethylhexyl) phthalate (DEHP) — listed as causing reproductive toxicity (male and female), MADL: 8.7 μg/day; Di-n-butyl phthalate (DBP) — listed, MADL: 8.7 μg/day; Diisodecyl phthalate (DIDP), Diisononyl phthalate (DINP), and others are also listed. Phthalates are commonly found in PVC plastic products, vinyl flooring, cables, medical devices, personal care products, and food packaging. Phthalates are specifically named in the new motor vehicle parts tailored warning (§25607.50) effective January 2025.

OEHHA Proposition 65 list; MADLs in Title 27 CCR §25805; Title 27 CCR §25607.50 (motor vehicle parts warning naming phthalates).

Consumer product manufacturers and importers using PVC or other phthalate-containing materials must assess phthalate exposure levels. Phthalate migration from consumer products (food contact materials, toys, personal care products, medical devices) can result in exposures above MADLs. Testing for specific phthalates by GC-MS is standard practice. For electronics and automotive parts, the new tailored warning formats specifically call out phthalates and lead, providing a standardised safe harbour approach for these industries.