Which component is NOT included in the Hazard Communication Standard on Safety Data Sheets?

The Hazard Communication Standard (HCS) requires that Safety Data Sheets (SDS) provide comprehensive information regarding hazardous chemicals. Each sheet is structured to ensure that users can understand the hazards and take the necessary precautions when handling these substances.

The components typically included in an SDS are precautionary statements, which advise on safe handling and emergency measures, first-aid measures to provide immediate care instructions in case of exposure, and product identification to clarify the specific chemical or mixture in question.

While hazard numbers might be used in certain contexts as part of broader labeling or regulatory frameworks, they are not a standard requirement under the HCS for inclusion in Safety Data Sheets. Instead, the information focuses on clear, actionable health and safety data, ensuring handlers are well-informed about the materials they interact with. Thus, the absence of hazard numbers from the SDS aligns with the goal of providing practical and essential information.