In which test is KMnO4 typically used as a standard?

KMnO4, or potassium permanganate, is typically used as a standard in the determination of chlorine levels in water. This method is based on redox reactions, where KMnO4 acts as a strong oxidizing agent. In the presence of chlorine, KMnO4 will react, allowing for the quantification of chlorine concentration through titration. This reaction is particularly useful because it can effectively measure organic and inorganic chlorine compounds.

In addition to its application in chlorine determination, KMnO4 serves in various chemical analysis processes, but its primary role as a standard in this context highlights its effectiveness in assessing chlorine levels in drinking water, which is crucial for ensuring water quality and safety. The utilization of KMnO4 in this manner is well-documented in water quality testing protocols, making it a reliable choice for analysts.