Which statement best describes the purpose of a chemical compatibility chart?

• A. It lists only safe and compatible pairs.
• B. It lists both safe and hazardous data for all chemicals.
• C. It is used to determine the rate of reaction between chemicals.
• D. It highlights not compatible pairs.

Answer: (D)

A chemical compatibility chart is a safety reference that helps you avoid dangerous reactions by showing which chemicals should not be mixed or stored together. The statement that the chart highlights not compatible pairs best describes its purpose because the primary function is to flag incompatibilities so you can prevent unwanted reactions, spills, or releases.

Some charts also show safe pairings, but that doesn't capture the main goal of the tool, which is to warn against combinations that could be hazardous. It isn’t meant to determine reaction rates, and it doesn’t imply that only safe or compatible pairs are listed.