Angela works as cleaning staff with a hospital. One day before cleaning up a spill of cleaning agents, she looks at an MSDS why does she refer to the msds

The MSDS is a material safety data sheet.

Explanation:

All hospitals and any work location with chemicals or chemical products is mandated by law (OSHA) to have an easy to locate MSDS in order to determine if a chemical is hazardous or poisonous — It also ensures that if you clean up any chemical spill that whatever product is used to clean up the spill will not interact in a negative way with what has been spilled as to not create an increased hazard. Angela is referencing the MSDS to first make sure the spilled chemical will not harm her or others around her, as well as to determine what method of cleaning that chemical is safest. Finally, the MSDS would her her ensure that other people do not get near the spilled chemical if hazardous or if people nearby should be evacuated.