Description

[1,1'-Biphenyl]-3,3'-dicarboxylic acid, 4-[[4,5-dihydro-3-methyl-5-oxo-1-(6-sulfo-2-naphthalenyl)-1H-pyrazol-4-yl]azo]-4'-[[1-[[(2-methoxyphenyl)amino]carbonyl]-2-oxopropyl]azo]-, potassium sodium salt is a high-purity, complex disazo dye intermediate designed for advanced colorant synthesis. This compound is critical for producing vivid and stable pigments and dyes, offering excellent chromophore properties and structural versatility for chemical modification. It is primarily required by manufacturers in the specialty chemicals, textile dyeing, and advanced materials sectors seeking to develop high-performance colorants.

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) for plastics, coatings, and inks.
• Textile Dye Manufacturing: Used in the production of specialized azo dyes for synthetic fibers, providing enhanced color fastness and brightness.
• Functional Dyes for Electronics: Potential application in the development of dyes for LCD color filters, OLED materials, and other optoelectronic devices.
• Research & Development: Employed in academic and industrial R&D labs for exploring novel chromophores and dye-sensitized materials.
• Specialty Ink Formulation: A precursor for creating high-value inks used in security printing, packaging, and digital printing technologies.

Basic Information

Product Name	[1,1'-Biphenyl]-3,3'-dicarboxylic acid, 4-[[4,5-dihydro-3-methyl-5-oxo-1-(6-sulfo-2-naphthalenyl)-1H-pyrazol-4-yl]azo]-4'-[[1-[[(2-methoxyphenyl)amino]carbonyl]-2-oxopropyl]azo]-, potassium sodium salt
CAS No.	84100-79-8
Molecular Formula	C46H32KN7NaO12S
Molecular Weight	977.94 g/mol
Synonyms	Pigment Yellow 191; C.I. 18795; 84100-79-8; Potassium sodium 3,3'-(3-methyl-5-oxo-1-(6-sulphonato-2-naphthyl)-4-pyrazolyl)azo-4,4'-di-o-anisoylaminocarbonyl-2-oxopropyl)azobiphenyl-3,3'-dicarboxylate; Disazo dye intermediate PY191; Benzimidazolone Yellow H4G intermediate; Diarylamide Yellow intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC and spectrophotometry to confirm identity and strength. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with every shipment to support your quality assurance protocols.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange-red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (KF)	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in DMF)	Clear solution

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