Description

2-[[1-[[[4'-[2-[(4-acetamido-2-carboxyphenyl)azo]acetoacetamido]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]amino]carbonyl]-2-oxopropyl]azo]-5-[[(4-sulphoanilino)carbonyl]amino]benzoic acid, sodium salt is a high-purity, complex azo dye intermediate designed for advanced colorant synthesis. This compound is critical for manufacturers requiring precise chromophore structures to achieve specific shades and performance characteristics in demanding applications. It is primarily utilized by producers of high-performance pigments and dyes for the textile, ink, and specialty coatings industries.

Application

• Primary Intermediate for High-Performance Pigments: Serves as a key building block in the synthesis of complex organic pigments (e.g., diarylide yellows, benzimidazolones) offering excellent lightfastness and weather resistance.
• Textile Dye Manufacturing: Used in the production of specialized azo dyes for synthetic fibers, providing vibrant and durable coloration.
• Inkjet and Digital Printing Inks: Enables the formulation of advanced colorants with superior color strength and stability for high-resolution printing.
• Industrial and Automotive Coatings: A precursor for pigments used in coatings that require exceptional durability, chemical resistance, and color consistency.
• Plastics and Masterbatch Coloring: Suitable for developing colorants used in the mass coloration of engineering plastics and polymer resins.
• Research & Development: A valuable compound for R&D laboratories focused on novel chromophore design and next-generation colorant technology.

Basic Information

Item	Details
Product Name	2-[[1-[[[4'-[2-[(4-acetamido-2-carboxyphenyl)azo]acetoacetamido]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]amino]carbonyl]-2-oxopropyl]azo]-5-[[(4-sulphoanilino)carbonyl]amino]benzoic acid, sodium salt
CAS No.	97337-85-4
Molecular Formula	C46H38N8O10S · Na
Molecular Weight	~917.89 g/mol
Synonyms	Pigment Yellow 155 Intermediate; Azo Dye Intermediate PY155; Sodium 2-[(1-{[(4'-{2-[(4-acetamido-2-carboxyphenyl)diazenyl]-3-oxobutanamido}-3,3'-dimethylbiphenyl-4-yl)carbamoyl]-2-oxopropyl}diazenyl)-5-[(4-sulfamoylphenyl)carbamoyl]benzoate; C.I. Pigment Yellow 155 Precursor; Benzoic acid, 2-[[1-[[[4'-[2-[(4-acetamido-2-carboxyphenyl)azo]acetoacetamido]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]amino]carbonyl]-2-oxopropyl]azo]-5-[[(4-sulfophenyl)amino]carbonyl]amino]-, sodium salt; PY 155 Sodium Salt Intermediate; 97337-85-4
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Each lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation. Certificates of Analysis (COA) detailing specific test results are provided with every shipment. We support compliance with global regulatory frameworks, including REACH.

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. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Fine Powder
Color	Yellow to Orange
Identification (IR)	Conforms to Standard
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.