Final answer:
MSDS stands for Material Safety Data Sheets, and they provide information about the hazards, handling, clean-up, and first aid for hazardous substances. OSHA requires employers to provide MSDS to inform workers about chemical hazards and how to work with chemicals safely.
Step-by-step explanation:
The hazardous substances that provide hazard, handling, clean-up, and first aid information are called MSDS, which stands for Material Safety Data Sheets. OSHA, the Occupational Safety and Health Administration, requires employers to provide MSDS to inform workers about chemical hazards through training, labels, alarms, color-coded systems, and other methods. MSDS contain information about how to work with chemicals safely and what dangers they pose to workers and the environment.