Metalphthalein is widely utilized in research focused on:

• pH Indicators: Commonly used in titrations and laboratory experiments, Metalphthalein serves as a reliable pH indicator, changing color at specific pH levels, which helps researchers determine the acidity or alkalinity of solutions.
• Analytical Chemistry: In analytical methods, it is employed to detect and quantify metal ions in various samples, making it essential for quality control in industries such as pharmaceuticals and environmental monitoring.
• Biochemical Applications: The compound is used in biochemical assays to study enzyme activities and interactions, providing valuable insights in drug development and metabolic research.
• Textile Industry: Metalphthalein is utilized as a dye in textiles, offering vibrant colors and excellent stability, which enhances the quality of fabric products.
• Food Industry: It finds application as a food colorant, where its safety and effectiveness make it a preferred choice for enhancing the visual appeal of food products.