Which document provides a detailed profile of hazardous substances or mixtures?

The Safety Data Sheet (SDS) is the correct choice as it provides a comprehensive overview of hazardous substances or mixtures. An SDS is a standardized document that details various aspects of handling and working with hazardous materials. It includes crucial information such as chemical properties, health hazards, safe handling and storage guidelines, emergency procedures, and regulatory requirements.

While the Material Safety Data Sheet (MSDS) served a similar purpose in the past, the transition to SDS reflects updated regulatory standards, aligning with the Globally Harmonized System (GHS) for classification and labeling of chemicals. Thus, although both MSDS and SDS serve to inform users about hazardous substances, the SDS is the current, standardized document recognized internationally.

The Emergency Response Guidebook provides guidance for first responders to hazardous materials incidents but does not offer in-depth profiles of substances. The Risk Assessment Report focuses on identifying and evaluating potential risks posed by specific substances or activities but lacks the detailed information specifically about hazardous substances found in an SDS. Each of these documents serves important functions, but for a detailed profile of hazardous substances or mixtures, the SDS is the definitive document.