A study by ERGO partner UBA, the German Environment Agency tested 44 potential substitutes for bisphenol A (BPA) for several different applications and products. The result was that 43 of these substances are not recommended for use, either because they have a hormone-mimicking effect or that a lack of data has not conclusively disproved evidence of such an effect. BPA can be found in many products including plastics, resins, thermal paper and paints, to name a few. Up until January 2020, BPA was used as a colour developer on thermal paper which is used for sales receipts. UBA recommends continued disposal of these sales receipts together with residual waste since there is currently no final evaluation of alternative colour developers such as bisphenol S (BPS).
For more information, read the full article here: https://www.umweltbundesamt.de/en/press/pressinformation/many-bisphenol-a-alternatives-may-be-endocrine