Which of the following must be included on the manufacturer's label of a chemical container?

The manufacturer’s label on a chemical container is crucial for ensuring safety and proper handling of the substance. The correct answer identifies that the label must include the product identification and hazard statement(s). This information is essential for anyone who handles the chemical, providing them with necessary details about its identity and the specific risks associated with it, such as toxicity, flammability, or reactivity.

Product identification ensures that users can easily recognize and confirm they are using the intended chemical, which is vital for safe laboratory practices. Hazard statements convey the nature of the risks, allowing handlers to understand the precautions required to work safely with the material.

Other options such as usage instructions, expiration dates, prices, storage temperatures, and weights, while potentially useful, are not universally required on the manufacturer’s label. Compliance with specific regulatory guidelines, such as those from OSHA or the Globally Harmonized System (GHS), focuses primarily on identifying hazards and ensuring safe practices in the laboratory environment.