Used as a pH indicator in laboratory and industrial applications, particularly in titrations involving weak bases and strong acids. It changes color from red (acidic) to yellow (basic) in the pH range of 4.4 to 6.2, making it ideal for detecting the endpoint in acid-base reactions where the neutralization occurs in slightly acidic conditions. Commonly used in microbiology for methyl red tests to identify bacteria that produce stable acids from glucose fermentation, such as in distinguishing members of the Enterobacteriaceae family. Also employed in educational labs for teaching pH concepts and in quality control processes requiring precise pH monitoring.