Carta® Black BSN Liquid is a specially selected anionic, substantive direct dye formulated for dyeing sized and unsized wood-free papers and industrial grades. This product offers a cost-effective solution for packaging applications and is particularly well-suited for liner board production where higher lightfastness is required as opposed to basic dyes. In general, it exhibits lower affinity compared to Cartasol dyes, which can be an advantageous feature, especially in scenarios involving mixed fabrics or surface dyeing.