Description

Acid Black 209 is a high-performance, synthetic acid dye belonging to the azo chemical class, widely recognized for its excellent dyeing properties. It is valued for its strong affinity to protein fibers like wool, silk, and nylon, providing deep, level shades with good fastness properties. This dye is essential for manufacturers in the textile, leather, and paper industries seeking reliable and consistent coloration for their products.

Application

• Primary dyeing and printing of wool and silk textiles.
• Coloration of nylon fibers and fabrics.
• Leather dyeing for footwear, apparel, and upholstery.
• Specialty paper coloring and tinting applications.
• Used in the production of inks and toners.
• As a colorant for certain types of technical plastics.

Basic Information

Product Name	Acid Black 209
CAS No.	72827-68-0
Molecular Formula	C40H23N7Na4O13S4
Molecular Weight	1081.86 g/mol
Synonyms	Acid Black WAN; C.I. Acid Black 209; Acid Leather Black RL; Nylosan Black N-BL; Telon Black RL; Erionyl Black RL; Lanasyn Black S-BL; Acid Black 209 (C.I. 15711)
EINECS	Contact for details

Quality Control

Our Acid Black 209 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against stringent internal specifications for color strength, shade, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, solubility, and fastness properties is provided with every 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 (HPLC)	≥ 95%
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Shade	Standard Black
Fastness Properties	To be specified per grade

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