Description

Trisodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulphonato(3-)][2-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonato(3-)]chromate(3-) is a high-performance, pre-metallized azo dye complex valued for its exceptional color fastness and stability. This compound is engineered to deliver vibrant, durable coloration, making it a critical component in demanding industrial applications where performance cannot be compromised. It is primarily sought after by manufacturers in the textile, leather, and specialty coatings industries for dyeing and printing processes.

Application

• Textile Dyeing: Primary application for dyeing natural and synthetic fibers, especially wool, silk, and nylon, offering excellent wash and light fastness.
• Leather Finishing: Used in the dyeing of leather goods to achieve deep, uniform, and long-lasting colors.
• Ink Formulation: A key pigment for manufacturing high-quality printing inks, including those for packaging and security printing.
• Paper Coloration: Employed in the production of specialty colored papers and boards.
• Plastics and Polymers: Can be used as a colorant for certain engineering plastics where thermal stability is required.
• Research & Development: Serves as a standard or intermediate in chemical research for developing new dyes and pigments.

Basic Information

Product Name	Trisodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulphonato(3-)][2-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonato(3-)]chromate(3-)
CAS No.	69943-66-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Mordant Black 17; Acid Chrome Dark Blue; Chromium complex of 3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulfonic acid and 2-hydroxy-3-[(2-hydroxynaphthyl)azo]-5-nitrobenzenesulfonic acid; Trisodium (3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulphonato)(2-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonato)chromate(3-); Mordant Black 17; Acid Dark Chrome Blue; Azo Chrome Dye Complex
EINECS	Contact for details

Quality Control

Our trisodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulphonato(3-)][2-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonato(3-)]chromate(3-) is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent shade, strength, and purity that meets the stringent requirements of the dyeing industry. Certificates of Analysis (COA) detailing key parameters are available upon request to support your quality assurance protocols.

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 and incompatible materials. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to standard
Assay (Dye Content)	Min. 95%
Moisture Content	Max. 5.0%
Water Insoluble Matter	Max. 1.0%
Shade and Strength	Within agreed commercial tolerance vs. standard
Heavy Metals (as Pb)	Max. 50 ppm

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