What must accompany a hazardous product as required by OSHA under the hazard communication standard?

The requirement for a hazardous product to be accompanied by Material Safety Data Sheets (MSDS) aligns with OSHA's Hazard Communication Standard, which aims to ensure that both employers and employees are informed about the hazards of chemicals they may be exposed to in the workplace. MSDS provides comprehensive information about various aspects of a chemical substance, such as its physical and chemical properties, health hazards, protective measures, and safety precautions for handling, storing, and using the product.

By mandating that these sheets accompany hazardous products, OSHA ensures that all necessary safety information is readily accessible, thus promoting a safer work environment. This helps in preventing accidents and injuries related to chemical exposure and empowers employees with the knowledge needed to handle hazardous substances responsibly.

While labeling, safety guidelines, and usage instructions are also important components of workplace safety, they do not fulfill the specific regulatory requirement set forth by OSHA regarding the provision of detailed data regarding hazardous materials. MSDS serves as the primary source of crucial information, making it the correct answer in this context.