Description

Tetrasodium [Mu-[[3,3'-[(3,3'-Dihydroxy[1,1'-Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[4-Hydroxy-6-(3-Sulphoanilino)Naphthalene-2-Sulphonato]](8-)]]Dicuprate(4-) is a complex, high-performance copper-based azo dye intermediate. This compound is valued for its role in synthesizing specialized, high-stability pigments and colorants. It is primarily required by manufacturers in the dyes and pigments, specialty chemicals, and advanced materials sectors for producing colors with enhanced light and chemical fastness.

Application

• Primary Intermediate for High-Performance Pigments: Synthesis of complex azo pigments for industrial coatings, plastics, and inks requiring superior weatherability and color strength.
• Specialty Dye Manufacturing: Production of metal-complex dyes for textiles, leather, and paper that demand excellent lightfastness and washfastness.
• Functional Colorants: Used in the development of colorants for high-tech applications, including security inks and specialty filters.
• Research & Development: Serves as a key building block in chemical R&D for novel chromophores and coordination compounds.
• Catalyst and Reagent Precursor: Potential use in the preparation of copper-based catalysts for organic synthesis reactions.

Basic Information

Product Name	Tetrasodium [Mu-[[3,3'-[(3,3'-Dihydroxy[1,1'-Biphenyl]-4,4'-Diyl)Bis(Azo)]Bis[4-Hydroxy-6-(3-Sulphoanilino)Naphthalene-2-Sulphonato]](8-)]]Dicuprate(4-)
CAS No.	74432-30-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Pigment Brown 33; Copper complex of a specific disazo dye; Tetrasodium (mu-((3,3'-((3,3'-dihydroxy(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(4-hydroxy-6-((3-sulfophenyl)amino)-2-naphthalenesulfonato)))(8-))dicuprate(4-); 74432-30-7; Copper azo complex brown pigment; Disazo copper complex pigment
EINECS	Contact for details

Quality Control

Our production of this specialty intermediate adheres to strict batch-to-batch consistency protocols. Quality is verified through analytical methods including HPLC, spectrophotometry, and metal content analysis to ensure precise composition and purity for downstream synthesis. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Copper (Cu) Content	To customer specification
Loss on Drying	Max. 2.0%
Sulfated Ash	To customer specification
Heavy Metals (as Pb)	Max. 20 ppm

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