Description

Direct Black 166 is a high-performance, synthetic diazo dye belonging to the direct dye class, widely recognized for its deep, intense black shade and excellent substantivity to cellulosic fibers. Its primary value lies in providing exceptional color fastness, particularly to washing, and its suitability for economical, single-bath dyeing processes. This dye is essential for manufacturers in the textile industry, especially for dyeing cotton, viscose, and paper, where a cost-effective and durable black coloration is required.

Application

• Primary dyeing of cotton fabrics and yarns.
• Coloration of regenerated cellulose fibers such as viscose and rayon.
• Dyeing of paper and paperboard for packaging and specialty products.
• Used in the production of leather for a uniform black finish.
• Formulation of inkjet inks for textile printing applications.
• As a colorant in the manufacture of soaps and detergents.

Basic Information

Item	Detail
Product Name	Direct Black 166
CAS No.	57131-19-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Direct Black 166; C.I. Direct Black 166; Direct Black EX; Direct Black G; Direct Deep Black EW; Amanil Black G; Atul Direct Black G; Dinamine Black G; Sirius Black G; Solar Black G
EINECS	Contact for details

Quality Control

Our Direct Black 166 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent shade, strength, and application performance. A Certificate of Analysis (COA) detailing key parameters such as color strength, solubility, and impurity content is provided with each shipment to guarantee it meets your specific 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 and sources of ignition.

Specification

Item	Specification
Appearance	Black to Bluish-Black Powder
Color Strength	Standard Depth ± 5%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to Standard
Solubility in Water	Conforms to Standard
Fastness Properties (Typical)	Washing: Good; Light: Moderate

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