Description

Direct Black 168 is a high-performance, synthetic diazo direct dye widely used for its deep, rich black shade and excellent build-up properties. It is valued for its strong affinity to cellulosic fibers, providing good wash and light fastness in textile applications. This product is essential for manufacturers in the textile dyeing and paper coloring industries seeking reliable and consistent colorants for bulk production.

Application

• Primary dyeing of cotton, viscose, and other cellulosic fibers in textile manufacturing.
• Coloration of paper and paperboard products, including specialty papers.
• Dyeing of leather to achieve deep black finishes.
• Used in the formulation of inks for specific printing applications.
• Potential use as a colorant for wood staining and other industrial coloring processes.

Basic Information

Product Name	Direct Black 168
CAS No.	83046-38-2
Molecular Formula	C34H25N9Na4O13S4
Molecular Weight	1023.86 g/mol
Synonyms	Direct Black 168; C.I. Direct Black 168; Direct Black G; Direct Black GX; Direct Black BN; Direct Black BNL; Direct Black 168 (C.I. 30030); Tetrasodium 4-amino-3-[[4'-[(2,4-diaminophenyl)azo][1,1'-biphenyl]-4-yl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
EINECS	Contact for details

Quality Control

Our Direct Black 168 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. The product undergoes comprehensive testing, including strength, shade, solubility, and fastness properties, against established industrial benchmarks. A Certificate of Analysis (COA) detailing all relevant specifications is provided with every shipment to guarantee compliance with your technical requirements.

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 incompatible materials. The original container is the optimal storage vessel to maintain product integrity.

Specification

Item	Specification
Appearance	Black to Bluish-Black Powder
Identification (IR)	Conforms to Standard
Color Strength	≥ 100% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to Standard
Solubility in Water	Conforms
Fastness Properties	Contact for details

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