Description

Acid Black 168 is a high-performance, synthetic acid dye belonging to the azo chemical class, identified by CAS No. 12238-88-9. It is valued for its excellent color strength, good light and wet fastness properties, and compatibility with various substrates. This dye is essential for manufacturers in the textile, leather, and specialty paper industries seeking durable and vibrant black coloration.

Application

• Textile Dyeing: Primary application for dyeing polyamide (nylon) fibers, wool, and silk to achieve deep, level black shades.
• Leather Finishing: Used in the dyeing of leather goods, providing uniform color penetration and good rub fastness.
• Paper Coloration: Employed for the tinting of specialty papers where color consistency and stability are required.
• Ink Manufacturing: A colorant component in the formulation of certain inks for industrial marking or packaging.
• Wood Staining: Suitable for staining wood and related materials to impart a black finish.

Basic Information

Product Name	Acid Black 168
CAS No.	12238-88-9
Molecular Formula	C40H23N7Na4O19S6
Molecular Weight	1195.98 g/mol
Synonyms	Acid Black WAN; C.I. Acid Black 168; Acid Leather Black DRL; Black 168; Acid Black 168 (C.I. 157065); Sodium 4-[[4-[[2,4-diamino-5-[(4-sulfophenyl)azo]phenyl]azo]-1-naphthyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulfonate; Nylosan Black N-BL; Telon Black BRL
EINECS	Contact for details

Quality Control

Our Acid Black 168 is manufactured under a stringent quality management system. Every batch is tested to ensure consistent color value, strength, and purity, meeting the specifications required for industrial dyeing applications. A comprehensive Certificate of Analysis (COA) detailing parameters such as assay, shade, solubility, and fastness properties is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Black powder or granules
Identification (IR)	Conforms to standard
Assay (Dye Content)	≥ 95%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to standard
Solubility in Water	Conforms

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.