Final answer:
WHMIS 2015 introduced a standardized format for Safety Data Sheets to improve chemical safety in the workplace. Important updates include hazard categorization, precautionary measures, and the use of pictograms.
Step-by-step explanation:
In WHMIS 2015, major changes were made to the format of Safety Data Sheets (SDS), which are essential for maintaining workplace safety. The updated format includes standardized headings, order, and content which came into effect to provide clearer instructions and safety measures for chemical handling. Notable updates involve the categorization of hazards, precautionary statements, and the inclusion of pictograms. Whenever you're working with new chemicals, it's crucial to consult the SDS to understand potential risks and safety procedures, including the proper disposal of chemicals to prevent harm to the environment and personal health.