Description

Chromium, Diazotized 4-Amino-3-Hydroxy-7-Nitro-1-Naphthalenesulfonic Acid-Diazotized 2-Amino-4-Nitrophenol-Resorcinol Coupling Products Copper Sodium Complexes is a high-performance, pre-metallized azo dye complex designed for demanding industrial applications. This compound is valued for its exceptional color fastness, stability, and complexing properties, making it a critical component in high-quality coloration processes. It is primarily utilized by manufacturers in the textile, leather, and specialty pigment industries seeking durable and vibrant colorants.

Application

• Textile Dyeing: For dyeing natural and synthetic fibers, particularly where high wash and light fastness are required.
• Leather Finishing: As a colorant in the finishing of leather goods, providing deep, penetrating shades with good rub fastness.
• Specialty Pigment Production: As a key intermediate in the manufacture of complex inorganic color pigments (CICPs) and other high-performance pigments.
• Paper Coloration: For specialty paper grades requiring specific, stable color properties.
• Ink Formulation: Used in the production of certain industrial and printing inks that demand chemical resistance.
• Research & Development: Serves as a chemical intermediate in organic synthesis and materials science research for novel chromophoric systems.

Basic Information

Product Name	Chromium, Diazotized 4-Amino-3-Hydroxy-7-Nitro-1-Naphthalenesulfonic Acid-Diazotized 2-Amino-4-Nitrophenol-Resorcinol Coupling Products Copper Sodium Complexes
CAS No.	90294-70-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Mordant Black 17; Chromium Complex of Azo Dye derived from 4-Amino-3-Hydroxy-7-Nitro-1-Naphthalenesulfonic Acid, 2-Amino-4-Nitrophenol, and Resorcinol; Pre-metallized Azo Dye Complex; Copper Sodium Chromium Azo Complex; Mordant Dye Black 17; C.I. 15705; Acid Chrome Dye Complex; Metal Complex Dye
EINECS	Contact for details

Quality Control

Our production of this metallized dye complex adheres to rigorous quality control protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through analytical methods including spectrophotometry, chromatography, and metal content analysis. A comprehensive Certificate of Analysis (COA) detailing purity, strength, and impurity profiles is provided with every shipment to support your quality assurance processes.

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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect performance.

Specification

Item	Specification
Appearance	Dark powder or solid
Identification (IR)	Conforms to standard
Assay (Dye Content)	Min. 90%
Moisture Content	Max. 5.0%
Ash Content	Contact for details
Metal Content (Cr, Cu)	Contact for details
Solubility (in water)	Partially soluble to soluble
pH (1% solution)	Contact for details

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