Description

Trisodium Bis[4-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]-3-Hydroxynaphthalene-1-Sulphonato(3-)]Chromate(3-) is a high-purity, complex chromium azo dye intermediate. This compound is valued for its role as a key precursor in the synthesis of specialized dyes and pigments, offering excellent color fastness and complexing properties. It is primarily required by manufacturers in the specialty chemicals, textile dyeing, and advanced materials sectors for producing high-performance colorants.

Application

• Primary Intermediate for synthesizing complex chromium-based azo dyes and pigments.
• Manufacture of high-performance dyes for textile applications, particularly for wool, silk, and nylon.
• Production of specialized pigments for inks, coatings, and plastics requiring enhanced light and weather fastness.
• Used in research and development of novel coordination compounds and metal-complex dyes.
• Potential applications in the development of functional materials and colorants for non-textile industrial uses.

Basic Information

Product Name	Trisodium Bis[4-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]-3-Hydroxynaphthalene-1-Sulphonato(3-)]Chromate(3-)
CAS No.	61916-41-4
Molecular Formula	C40H24CrN8Na3O14S2
Molecular Weight	1034.81 g/mol
Synonyms	Trisodium Chromium Bis(1-phenyl-3-methyl-4-[(2-hydroxy-1-naphthyl)azo]-5-pyrazolonate) Disulfonate; C.I. Mordant Black 17; Chromium complex of 1-(2-Hydroxy-1-naphthylazo)-2-naphthol-4-sulfonic acid; Acid Chrome Dye Intermediate; Azo Chromium Complex Dye; Mordant Dye Intermediate; Trisodium (OC-6-22)-bis[4-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-3-hydroxy-1-naphthalenesulfonato(3-)]chromate(3-)
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and purity. Each lot is tested against established internal specifications, which typically include parameters for assay, impurity profile, and heavy metal content. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every 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 ambient temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents. The container should be kept tightly sealed to protect the contents from moisture.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Chromium Content	Contact for details

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