Description

Chromate(2-), [3-[(5-chloro-2-hydroxyphenyl) azo]-4-hydroxy-6-[(1-oxo-2-propenyl)amino]-2-naphthalenesulfonato(3-)][1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphthalenato(2-)], sodium is a high-purity, complex chromium-based azo dye intermediate. This compound is valued for its role in synthesizing specialized pigments and dyes with specific coloristic and fastness properties. It is primarily required by manufacturers in the pigments, advanced coatings, and specialty chemical sectors for producing high-performance colorants.

Application

• Synthesis of High-Performance Organic Pigments: A key intermediate for producing complex azo pigments, particularly for applications requiring enhanced lightfastness and weather resistance.
• Specialty Dyes for Industrial Coatings: Used in formulating dyes for automotive, industrial, and protective coatings where color stability is critical.
• Coloration of Polymers and Plastics: Imparts color to engineering plastics and high-temperature polymers during the manufacturing process.
• Research & Development: Serves as a building block in chemical R&D for developing novel chromophores and functional dyes.
• Inks for Security and Brand Protection: Potential use in formulating specialty inks where specific chemical signatures are required.

Basic Information

Item	Details
Product Name	Chromate(2-), [3-[(5-chloro-2-hydroxyphenyl) azo]-4-hydroxy-6-[(1-oxo-2-propenyl)amino]-2-naphthalenesulfonato(3-)][1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphthalenato(2-)], sodium
CAS No.	132539-03-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Sodium (3-((5-chloro-2-hydroxyphenyl)diazenyl)-4-hydroxy-6-((1-oxoprop-2-en-1-yl)amino)naphthalene-2-sulfonato)(1-((2-hydroxy-4-nitrophenyl)diazenyl)naphthalen-2-ato)chromate(2-); Complex chromium azo dye intermediate; Chromium complex pigment intermediate; Azo chromium complex; CI Pigment Brown; Contact for additional trade names and aliases.
EINECS	Contact for details

Quality Control

Our Chromate(2-) sodium complex is produced under stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure consistent purity, identity, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications 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, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure containers are kept sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Fine Powder
Color	Characteristic
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Contact for details

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