The CAS Chemical Safety Library (CSL)
"The CAS Chemical Safety Library (CSL) provides unique crowd sourced data content containing hazardous reactions that can be used to alert scientists to potential dangerous experiments. CAS, a division of the American Chemical Society, is committed to increasing safety in the lab and has provided this open access platform to serve scientists worldwide. Prior to September 1, 2023, the Chemical Safety Library was created and maintained by Pistoia Alliance."--website
