Direct Black 112 (C.I. Direct Black 112) from Aura Color Chem Industry is a direct azo dye (trisazo type) widely used for dyeing cellulosic and porous materials. 🔹 Applications Your mentioned applications are correct. Direct Black 112 is commonly used for: Textiles Cotton Viscose (rayon) Other cellulosic fibers Paper industry Paper dyeing and tinting Wood Wood staining and coloring Others (industrial) Leather (in some cases) Ink formulations 👉 It is especially suitable for cellulose-based substrates, because direct dyes have strong affinity for these fibers and can be applied directly from aqueous solution. 🔹 Key Characteristics Chemical class: Trisazo (direct dye) Shade: Blue-grey to black Solubility: Good in water Application method: Direct dyeing (no mordant required) Fastness properties: Light fastness: Good (~6 rating) Acid resistance: Good Alkali resistance: Moderate 🔹 Why it’s used for these materials Cotton & viscose: Excellent absorption due to cellulose affinity Paper: Easy penetration and uniform coloration Wood: Provides consistent staining due to water solubility Cost-effective: No need for complex fixation processes 🔹 Summary Direct Black 112 by Aura Color Chem is a versatile, water-soluble direct dye mainly used for: Cotton & viscose textiles Paper dyeing Wood staining It offers good leveling, easy application, and decent fastness, making it suitable for bulk industrial dyeing.