Chemical catalogs are organized collections of information about various chemicals, including their properties, uses, and safety data. These catalogs serve as essential resources for researchers, educators, and industry professionals, helping them find the right chemicals for their projects or experiments. Typically, chemical catalogs include details such as molecular structure, chemical formulas, and physical characteristics like boiling and melting points. They may also provide information on regulatory compliance and safety measures, ensuring that users handle chemicals responsibly and effectively. Common examples of chemical catalogs include those published by organizations like Sigma-Aldrich and Thermo Fisher Scientific.