In which part of the MSDS would you find information on ecological effects?

The correct answer is found in Section 12 of the Material Safety Data Sheet (MSDS), which is now commonly referred to as the Safety Data Sheet (SDS). This section specifically addresses the ecological effects of the chemical substance. It provides information about the potential environmental impact, such as toxicity to aquatic life, persistence in the environment, and bioaccumulation potential. Understanding these ecological effects is vital for assessing the risks associated with a chemical when it is released into the environment and for preparing appropriate responses to minimize its impact.

The other sections of the SDS cover different aspects; for instance, Section 5 typically deals with fire-fighting measures, Section 8 addresses exposure controls and personal protection, and Section 14 focuses on transport information. Each of these sections serves a distinct purpose, whereas Section 12 is specifically designated for environmental hazard information. Thus, selecting Section 12 ensures that one is referencing the appropriate information regarding ecological effects.