What does an SDS provide regarding hazardous chemicals?

An SDS, or Safety Data Sheet, is a crucial document that accompanies hazardous chemicals, providing comprehensive information about the chemical's properties, potential hazards, handling and storage requirements, and emergency measures in the event of an accident. Option B is correct because it encompasses details on safety measures, toxicological information, and physical and chemical properties, helping users understand how to safely handle, store, and respond to emergencies involving the chemical.

The other options, while they may relate to chemical safety in some way, do not accurately reflect the primary purpose of the SDS. Instructions for disposal may be part of the SDS but are not its main focus. A list of authorized users is not typically included in an SDS, as this document is aimed at providing general safety information rather than specifying who may use the chemical. Lastly, a certification of chemical purity is also not a component of an SDS; rather, such a certification may be a separate document issued by the manufacturer or a testing facility. Therefore, the most accurate choice regarding what an SDS provides is the information on safety and hazard potential.