Description

Acid Black 2 is a synthetic acid dye belonging to the azo dye class, widely recognized for its deep black color and good affinity for protein fibers. Its primary value lies in providing consistent, high-strength coloration with good leveling properties and fastness characteristics. This dye is essential for industrial applications requiring a durable black shade, particularly in the textile and leather processing industries. Global manufacturers and processors rely on its performance for producing a range of dark-colored goods.

Application

• Textile Dyeing: Primary application for dyeing protein fibers such as wool, silk, and nylon to achieve deep black shades.
• Leather Finishing: Used in the dyeing of leather goods, including footwear, apparel, and upholstery, for uniform black coloration.
• Ink Manufacturing: Serves as a colorant component in the formulation of specialty inks for various printing applications.
• Paper Staining: Employed for the coloration of specialty papers and paper products where a black hue is required.
• Biological Staining (Histology): In some formulations, it may be used as a biological stain for microscopic analysis in laboratory settings.
• Wood Staining: Can be utilized for imparting color to wood and wood-based materials.

Basic Information

Product Name	Acid Black 2
CAS No.	8005-03-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Acid Black 2; C.I. Acid Black 2; Acid Leather Black NB; Naphthalene Black 4B; Acid Black NB; Acid Black 4B; Amido Black 10B; Acid Black B
EINECS	Contact for details

Quality Control

Our Acid Black 2 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Quality parameters including color strength, shade, solubility, and impurity profiles are rigorously tested against established internal specifications. 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. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Black powder or granules
Identification (IR)	Conforms to standard
Color Strength	Standard depth ± 5%
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
pH (1% Solution)	Contact for details

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