Description

Acid Black 76 is a synthetic acid dye belonging to the azo dye class, valued for its deep, intense black shade and good fastness properties. It is a critical component for achieving durable and vibrant coloration on protein-based fibers like wool, silk, and nylon. This dye is essential for manufacturers in the textile, leather, and paper industries seeking reliable and consistent black hues for their products. Acid Black 76 CAS NO 12217-16-2 is known for its compatibility with standard dyeing processes and its ability to produce level dyeings.

Application

Acid Black 76 is primarily used as a coloring agent in industries where strong, permanent black shades are required on specific substrates.

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers and fabrics to achieve deep black colors.
• Leather Processing: Used in the dyeing of leather goods, such as apparel, footwear, and accessories, providing rich and uniform black finishes.
• Paper Coloration: Employed in the production of specialty papers, including colored paper stocks and decorative papers.
• Ink Formulation: A potential component in the manufacture of certain inks, particularly for specialized printing applications.
• Biological Staining: May find use as a histological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	Acid Black 76
CAS No.	12217-16-2
Molecular Formula	C22H14N6Na2O9S2
Molecular Weight	616.49 g/mol
Synonyms	Acid Black B; C.I. Acid Black 76; Acid Leather Black B; Naphthalene Black 10B; Acid Black 10B; Black 10B; Azo Black; Acid Dye Black 76; Wool Black 10B
EINECS	Contact for details

Quality Control

Our production of Acid Black 76 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profile. Certificates of Analysis (COA) documenting these results are available for every shipment. We maintain compliance with relevant industry and safety standards to support our global customer base.

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. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Black powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
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.