Basic Green 4, famously known as Malachite Green, is a powerful cationic dye that produces an intense, bluish-green colour. In seed treatment, its cationic nature is a key advantage, allowing it to form a strong bond with the anionic binders and polymers used in film coatings. This results in a very strong and vibrant colouration. Its exceptional tinctorial strength makes it a highly economical choice for achieving a vivid green colour.