Acid Yellow 49 is apt for dyeing nylon, silk, wool, and other protein fibers. It works as a popular colorant for several applications. This is used in ink, textiles and pond dyes. This is functional as a self-shade or dye-blend component for swimwear, outdoor sports and upholstery cloths. Acid Yellow 49 offers great color to a variability of detergent as well as cleaner applications. This colorant is a solution mixture suited for staining fingerprints.