Which of the following should be referred to for information regarding the proper handling of a specific hazardous substance?

The Controlled Substance Ordering System (CSOS) is primarily used for ordering controlled substances electronically and ensuring compliance with regulations surrounding their distribution. While it is important for the legal handling of controlled substances, it does not provide detailed safety or handling information about hazardous materials.

The Food and Drug Administration (FDA) regulates food, drugs, and medical devices, ensuring their safety and efficacy. While the FDA does oversee substances that may be hazardous in a medical context, it does not focus on the comprehensive handling and safety measures for all hazardous substances as outlined in an SDS.

The Occupational Safety and Health Administration (OSHA) establishes and enforces safety regulations in the workplace, including guidelines for handling hazardous materials. However, OSHA itself does not provide substance-specific handling information, which is found in the SDS.