Is a seven-digit number (xxx-xxx-x) assigned by the European Commission to chemicals contained in three inventories:ĮINECS is the European Inventory of Existing Commercial Substances and its EINECS numbers are displayed as 2xx-xxx-x.ĮLINCS is the European List of Notified Chemical Substances that was available after Septemand its ELINCS numbers are displayed as 4xx-xxx-x. For more information: We have assigned 'ID numbers' (with 6 leading zeros or nines, e.g., 000000-xx-x, 888888-xx-x) or 999999-xx-x) for blends and chemicals that do not have CAS numbers. CAS Registry Numbers are assigned by the Chemical Abstracts Service, a division of the American Chemical Society. CAS numbers identify the chemical, but not its concentration or specific mixture. ChemicalĬhemical Abstracts Service Registry Number is a unique identifier for a chemical and its synonyms. Primary Chemical Name is the standard name assigned to a chemical substance.
