Description

Acid Black 241 is a high-performance synthetic dye belonging to the acid dye class, valued for its deep, rich black shade and excellent fastness properties. This product is engineered to deliver consistent color strength and superior leveling on protein fibers like wool, silk, and nylon, as well as on leather. It is an essential component for manufacturers in the textile, leather finishing, and specialty paper industries seeking reliable and vibrant coloration. The compound is identified by CAS No. 84170-03-6.

Application

• Primary dyeing and printing of wool and silk textiles.
• Coloration of nylon fibers and fabrics for apparel and automotive interiors.
• Leather finishing for footwear, upholstery, and accessories.
• Dyeing of specialty papers and non-woven materials.
• Used in the formulation of inks and pigments for specific industrial applications.
• Blending with other acid dyes to achieve custom black and dark shade formulations.

Basic Information

Product Name	Acid Black 241
CAS No.	84170-03-6
Molecular Formula	C40H23N7Na4O13S4
Molecular Weight	1081.85 g/mol
Synonyms	Acid Black WAN; C.I. Acid Black 241; Acid Black 241 (C.I.); Black 241; Acid Leather Black 241; Sodium 4-[[4-[[2,4-diamino-5-[(4-sulfonatophenyl)diazenyl]phenyl]diazenyl]-3-sulfonatophenyl]diazenyl]-3-hydroxynaphthalene-2,7-disulfonate; Acid Dye Black 241; Aminyl Black F-2B
EINECS	Contact for details

Quality Control

Our Acid Black 241 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 key parameters such as color strength, shade, solubility, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance tests is provided with every shipment to guarantee it meets your application 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. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Black to dark blue-black powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
Solubility in Water	Conforms
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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