For more than a century, the CRC Handbook of Chemistry and Physics has been a trusted source of reliable scientific data. It contains thousands of physical and chemical data tables which are reviewed and updated on an ongoing basis
The Sigma-Aldrich Catalogue covers more than 40,000 chemical products and is particularly useful as a starting point because entries include molecular and structural formulas, basic physical data, MSDS data and cross-references to PubChem, Reaxys (Beilstein), and Merck.
Contains chemical and physical data; health, safety and environmental data; and supplier listings for several hundred common solvents. Compiled by the National Center for Manufacturing Sciences (NCMS).