Description

Direct Black 170 is a high-performance, synthetic diazo dye belonging to the direct dye class, known for its excellent substantivity to cellulosic fibers. Its primary value lies in delivering deep, economical black shades with good wet fastness properties, making it a cost-effective solution for industrial dyeing. This product is essential for textile manufacturers, leather tanners, and paper producers seeking a reliable black colorant for bulk applications. Direct Black 170 CAS NO 86167-73-9 is formulated to meet the stringent demands of continuous and batch dyeing processes.

Application

• Primary exhaust dyeing of cotton, viscose, and other cellulosic fabrics.
• Continuous dyeing processes for textiles, including pad-steam and pad-batch methods.
• Leather dyeing for upholstery, footwear, and accessories.
• Coloration of paper and paperboard products.
• As a component in black dye mixtures to achieve specific shade depths and tones.
• Dyeing of blended fabrics where a cellulosic component is present.

Basic Information

Product Name	Direct Black 170
CAS No.	86167-73-9
Molecular Formula	C34H25N9Na4O13S4
Molecular Weight	1023.86 g/mol
Synonyms	Direct Black 170; C.I. Direct Black 170; Direct Black EX; Direct Black G; Direct Black NB; Direct Black V; 86167-73-9; Direct Deep Black EW; Amanil Black NB; Atul Direct Black NB
EINECS	Contact for details

Quality Control

Our Direct Black 170 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Every lot is tested for critical parameters including shade, strength, solubility, and fastness properties against standard references. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and application test results 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 strong oxidizing agents. Under recommended storage conditions, the product remains stable for an extended period.

Specification

Item	Specification
Appearance	Black to Bluish-Black Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
pH (1% Solution)	6.0 - 8.0
Shade on Cotton	Conforms to Standard
Fastness Properties (Typical)	Light: 4-5; Wash: 3-4; Water: 3-4

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