Used as a pH indicator in analytical chemistry, turning red in acidic solutions and yellow in alkaline environments. Commonly employed in educational lab experiments for acid-base titrations due to its clear color change. Also utilized in some industrial dyes for textiles and paper, providing a bright yellow hue. Has been misused as an adulterant in food products like turmeric, raising safety concerns, leading to strict regulations against such use. Limited application in histology for staining biological samples under controlled conditions.