Why is the date of preparation or last revision important on an SDS?

The date of preparation or last revision on a Safety Data Sheet (SDS) is crucial because it indicates when the information was last reviewed or updated. Chemical information can change over time due to new research, changes in regulations, the introduction of new safety practices, or the discovery of new hazards. By knowing the date, users can determine if they are relying on the most current safety information and guidelines relevant to handling the chemical in question. This ensures that employees are aware of any changes in hazards, handling procedures, and emergency measures, thereby enhancing workplace safety and compliance with regulations.