Description

Acid Black D CAS NO 8004-59-9 is a synthetic acid dye belonging to the azo dye class, valued for its strong affinity to protein-based fibers like wool, silk, and nylon. Its primary commercial value lies in providing deep, level shades of black and grey with good wet fastness properties in demanding industrial dyeing processes. This product is essential for manufacturers in the textile, leather finishing, and paper coloring industries seeking consistent and cost-effective coloration.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers to achieve deep black and grey shades.
• Leather Finishing: Used in the dyeing of leather goods, providing uniform color penetration and good rub fastness.
• Paper Coloring: Employed in the production of specialty papers, including decorative and packaging materials.
• Ink Formulation: Serves as a colorant in the manufacture of certain types of inks, particularly for non-food contact materials.
• Biological Staining: May be utilized in histological and microbiological staining procedures as a contrast agent.
• Wood Staining: Applied for coloring wood and wood-based products to mimic darker wood species.

Basic Information

Product Name	Acid Black D
CAS No.	8004-59-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Acid Black D; C.I. Acid Black 1; Acid Leather Black D; Naphthalene Black 12B; Acid Black 1; Wool Black 6BN; Amido Black 10B; Acid Black 10B; Aniline Blue Black
EINECS	Contact for details

Quality Control

Our Acid Black D is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets consistent specifications for color strength, shade, solubility, and impurity profiles. A Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with each shipment to guarantee traceability and compliance with your quality 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to standard
Assay (Color Strength)	≥ 98% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
Shade	Conforms to standard
Leveling Property	Good to Excellent

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