What it is
Polyvinyl chloride is the chlorine-containing plastic — rigid by default (plumbing pipe) and made soft with plasticisers. In flexible PVC, those additives can be up to ~40% of the weight, and they’re not chemically bonded to the polymer, so they migrate. That “new shower curtain” smell is the material introducing itself.
Where you meet it
Some commercial cling wraps and deli films, vinyl flooring, shower curtains, garden hoses, faux leather, blister packs, cable sheathing — and, less obviously, the soft gasket sealing most metal jar lids.
What the research shows
The migration pattern is specific. A Hanyang University study found the plasticiser DEHP did not detectably migrate from PVC film into water, even hot — but migrated heavily into fatty and oily contact, with commercial films releasing far more than lab-made ones (Toxics, 2023) lab. Cheese, meat and oily leftovers are the real scenario; the water bottle was never PVC’s crime scene. Because phthalates are unbonded, they also end up in household dust.
The polymer itself turns up in people — PVC was identified in 12.1% of the carotid-plaque samples in the NEJM 2024 study human obs.. For the plasticisers, the signal is bigger: phthalates are established endocrine disruptors in animal work animal, with human observational links to reproductive and metabolic outcomes human obs.. One modelling study attributed roughly 356,000 global cardiovascular deaths in 2018 to DEHP exposure (NYU Langone, eBioMedicine, 2025) early — a modelled estimate with wide uncertainty, built on associations, not causation. I cite it as a scale of concern, not a body count.
What I do
No PVC touches food in my kitchen. Cling film gets checked — most Australian supermarket wraps are now polyethylene, but catering films often aren’t — and mostly replaced outright by glass jars and containers with lids. Nobody drinks from the garden hose, and the floors get vacuumed on the theory that phthalate-laden dust is the exposure I can’t see.
The honest bit
“Phthalate-free” PVC exists, and it’s an improvement — but it’s still PVC with other stabilisers doing the same job, and heavy-metal stabilisers have their own history. This is the one commodity plastic where my position is avoidance rather than management.