Acid blue 80

Acid Blue 80 (CAS 4474-24-2), also known commercially as Alizarine Fast Blue R and Weak Acid Brilliant Blue RAW, is an anthraquinone-based acid dye delivering deep, bright blue shades. It offers strong wash and light fastness across textile dyeing, leather finishing, and specialty printing applications where consistent, reproducible color performance is required for industrial manufacturing.

In textile processing, this dye is applied to protein fibers such as wool, silk, and nylon, producing level dyeings with good fastness to washing and perspiration for apparel and technical fabrics. Leather finishers use it in acid dye baths to achieve uniform surface coloration on finished hides. In the printing sector, it is incorporated into specialty inks for stable, saturated blue tones.

The dye is used on paper and coated substrates where high-quality visual output is necessary. Limited use in food-contact or cosmetic-adjacent applications requires buyers to confirm regulatory status. This product is supplied as a powder, typically as the sodium salt form. Standard commercial grades are offered at defined dye content concentrations, commonly expressed as a percentage of active colorant.

Technical and textile-grade specifications are the most prevalent in the market. Our supply chain ensures that the material meets rigorous industrial requirements for purity and color consistency.