Description

Chromate(3-), [4-[4,5-dihydro-4-[(2-hydroxy-5-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonato(3-)][3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonato(3-)]-, trisodium is a complex, high-purity synthetic dye and pigment intermediate. This compound is valued for its precise chromophoric structure, which provides excellent color strength and stability in demanding applications. It is primarily utilized by manufacturers in the specialty dyes, pigments, and advanced material coatings industries seeking consistent performance and batch-to-batch reliability.

Application

• Primary intermediate for the synthesis of high-performance azo dyes and pigments.
• Key component in the formulation of specialty inks for security printing and high-resolution applications.
• Used in the production of colorants for advanced polymeric materials and engineering plastics.
• Potential use in the research and development of functional dyes for optical and electronic applications.
• Manufacturing of colorants for industrial coatings requiring specific lightfastness and chemical resistance.

Basic Information

Product Name	Chromate(3-), [4-[4,5-dihydro-4-[(2-hydroxy-5-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonato(3-)][3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonato(3-)]-, trisodium
CAS No.	85959-76-8
Molecular Formula	C36H21N7Na3O16S2
Molecular Weight	964.75 g/mol (approx.)
Synonyms	Trisodium Chromate Complex Dye; Azo Dye Intermediate 85959-76-8; C.I. Mordant Black; Complex Chromium Azo Dye; Benzenesulfonato Chromium Complex; Nitrohydroxynaphthalene Azo Dye; Trisodium [4-[4,5-dihydro-4-[(2-hydroxy-5-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonato(3-)][3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonato(3-)]chromate(3-)
EINECS	Contact for details

Quality Control

Our production of this specialty chemical adheres to strict quality management protocols to ensure purity and consistency for industrial applications. Each batch is analyzed using advanced techniques like HPLC and spectrophotometry to verify critical parameters. A comprehensive Certificate of Analysis (COA) detailing identity, purity, 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 a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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