Most LEGO and DUPLO parts are made from ABS plastic. ABS does not contain BPA. Here’s a statement from LEGO about the safety of ABS: The majority of LEGO elements are made from ABS plastic (Acrylonitrile Butadiene Styrene), a high-quality plastic that meets our extensive list of safety and quality specifications.
Do Legos have phthalates?
It was a big relief for us to find out LEGOs don’t contain PVC or phthalates, and that generally they exceed safety standards.