Description

Chromium, acetylated 6-amino-4-hydroxy-2-naphthalenesulfonic acid-p-cresol-diazotized 2-hydroxy-5-nitrobenzenesulfonic acid-diazotized 4-hydroxy-3-nitrobenzenesulfonic acid coupling products ammonium potassium sodium complexes is a specialized coordination complex primarily used as a high-performance black dye or pigment. This product matters for its ability to deliver deep, intense black coloration with excellent light and wash fastness properties, making it a critical component for demanding technical applications. It is specifically needed by manufacturers in the textile, leather, and specialty ink industries seeking durable and consistent black shades.

Application

• Textile Dyeing: Primary application for dyeing natural and synthetic fibers, especially where a deep, jet-black shade with high fastness to light and washing is required.
• Leather Finishing: Used in the dyeing of leather goods, providing rich, uniform black color with good penetration and durability.
• Specialty Inks: Formulation of high-quality printing inks, including those for security printing, packaging, and other applications demanding color stability.
• Paper Coloration: Employed in the production of specialty colored papers, particularly for deep black tones.
• Pigment Preparation: Can be processed into a pigment form for use in paints, coatings, and plastics where a stable black colorant is needed.
• Wood Staining: Applied in stains for wood and other porous materials to achieve a deep black finish.

Basic Information

Product Name	Chromium, acetylated 6-amino-4-hydroxy-2-naphthalenesulfonic acid-p-cresol-diazotized 2-hydroxy-5-nitrobenzenesulfonic acid-diazotized 4-hydroxy-3-nitrobenzenesulfonic acid coupling products ammonium potassium sodium complexes
CAS No.	159518-93-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Mordant Black 56; Chromium Complex Black Dye; Acetylated H-Acid Chrome Complex Black; Azo Mordant Dye Black; Leather Black Dye Complex; Chromium Azo Complex Black; 6-Amino-4-hydroxy-2-naphthalenesulfonic acid, acetylated, diazotized, coupled and complexed chromium salt; Ammonium/Potassium/Sodium salt of chromium complexed azo dye.
EINECS	Contact for details

Quality Control

Our Chromium complex dye is manufactured under a stringent quality management system. Every batch undergoes rigorous testing to ensure consistent shade, strength, and application performance. Key parameters such as color strength, fastness properties, and metal content are verified against established specifications. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance tests 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, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Black to bluish-black powder
Identification (IR)	Conforms to standard
Color Strength	100% ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Ash Content	≤ 30.0%
Water Solubility	Conforms
pH (1% Solution)	6.0 - 8.0
Fastness to Light	≥ 5-6 (Standard Scale)
Fastness to Washing	≥ 4-5 (Standard Scale)

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