According to OSHA, Hazard Communication 1910.

According to OSHA, Hazard Communication 1910.1200 has the purpose of ensuring that the hazards of all chemicals produced or imported are evaluated, and that information concerning their hazards is transmitted to employers and employees.

Also known as the "Right To Know Law," which one of the following OSHA regulations first dealt with specific information related to the contents of chemicals used in the workplace?