Description

Acid Black 242 is a high-performance, synthetic acid dye belonging to the azo chemical class, valued for its deep, intense black shade and excellent fastness properties. This product is engineered to deliver superior color yield and consistency, which is critical for achieving uniform and durable coloration in demanding industrial applications. It is primarily utilized by manufacturers in the textile, leather, and paper industries seeking a reliable and cost-effective black dyeing solution.

Application

• Primary dyeing and printing of polyamide (nylon) fibers and fabrics.
• Coloration of leather goods, including footwear, upholstery, and accessories.
• Dyeing of wool and silk textiles.
• Specialty applications in dyeing paper and packaging materials.
• Used in the formulation of inks for specific marking and printing purposes.
• Blending with other acid dyes to achieve custom, complex shades.

Basic Information

Product Name	Acid Black 242
CAS No.	152521-11-4
Molecular Formula	C40H23N7Na4O19S6
Molecular Weight	1379.06 g/mol
Synonyms	Acid Black WNN; C.I. Acid Black 242; Acid Leather Black DRL; Nylosan Black N-BLN; Telon Black K-BLS; Black 242; Acid Black 242 (C.I. 30336); Sodium 4-[[4-[[4-[(4-aminophenyl)azo]-1-naphthyl]azo]-1-naphthyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
EINECS	Contact for details

Quality Control

Our Acid Black 242 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Every lot is tested against rigorous internal specifications for critical parameters such as color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing these results is provided with each 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 and sources of heat. 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)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
pH (1% Solution)	6.0 - 8.0
Shade	Conforms to standard
Fastness Properties	Contact for details

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