Which information is NOT required on original container labels according to the OSHA Hazard Communication Standard?

The OSHA Hazard Communication Standard (HCS) outlines the requirements for labeling hazardous chemicals to ensure safety in the workplace. According to these regulations, the original container labels for hazardous substances must include specific information to adequately inform users about the nature of the substances they are handling.

The information that must be present includes the product name, which allows workers to identify the chemical and understand its potential hazards. A warning label is also critical as it conveys the specific dangers associated with the substance, such as flammability or toxicity. Additionally, the manufacturer's name and address are essential for traceability, providing users with a point of contact for safety data sheets and other relevant information.

While emergency telephone numbers are useful, especially in case of accidental exposure or spills, they are not mandated to be included on the original container labels by the OSHA standard. Thus, while this information is important for overall safety and is often included in safety data sheets or provided in company emergency response plans, it is not a requirement on the original labels themselves. This distinction is why the emergency telephone number is the correct answer in this context.