N-Methyliminodiacetic acid is primarily used as a chelating agent in various industrial and chemical processes. It effectively binds metal ions, making it valuable in water treatment to remove heavy metals and prevent scaling. In the pharmaceutical industry, it is utilized in the synthesis of certain drugs, particularly those requiring metal ion stabilization. Additionally, it finds application in agriculture as a component of fertilizers to enhance nutrient absorption by plants. Its chelating properties also make it useful in cleaning agents and detergents for improving efficiency in removing metal stains.