What it is
A bisphenol analogue of BPA with a sulfonyl bridge instead of propane.
What it does
Marketed as a BPA-free substitute in plastics, thermal paper, and food can linings.
Why it’s a concern
Research by Rochester and Bolden (2015, EHP) reviewed 32 studies and found BPS has comparable endocrine-disrupting potency to BPA. US CDC biomonitoring now detects BPS widely in urine, consistent with its substitute role. Thermal receipt paper is a major dermal exposure route.
Also known as
BPS4,4’-sulfonyldiphenol
CAS numbers
80-09-1
Commonly found in
BPA-free plasticsthermal receiptspolyethersulfone
Safer alternatives
- glass
- stainless steel
- phenol-free thermal paper
Related chemical families
Sources
- Rochester and Bolden 2015, EHP