Description

4,4'-Bis[[1-[[(4-Methoxyphenyl)Amino]Carbonyl]-2-Oxopropyl]Azo][1,1'-Biphenyl]-2,2'-Disulphonic Acid is a high-purity, specialized azo dye intermediate with a complex disulphonic acid structure. This compound is valued for its role in synthesizing high-performance dyes and pigments, offering excellent color properties and chemical stability. It is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of high-quality, water-soluble azo dyes for textile fibers like cotton, wool, and silk.
• Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics, where lightfastness and color strength are critical.
• Functional Dyes: Potential applications in the development of functional dyes for non-textile uses, such as in paper coloring or biological staining.
• Research & Development: Serves as a valuable chemical entity in R&D laboratories for exploring new chromophores and advanced material science applications.

Basic Information

Product Name	4,4'-Bis[[1-[[(4-Methoxyphenyl)Amino]Carbonyl]-2-Oxopropyl]Azo][1,1'-Biphenyl]-2,2'-Disulphonic Acid
CAS No.	85030-63-3
Molecular Formula	C40H34N6O12S2
Molecular Weight	854.86 g/mol
Synonyms	4,4'-Bis[1-[(4-methoxyphenyl)carbamoyl]-2-oxopropylazo]biphenyl-2,2'-disulphonic Acid; C.I. Acid Yellow 220; Acid Yellow 220; Azo Dye Intermediate 85030-63-3; 1,1'-Biphenyl-2,2'-disulfonic acid, 4,4'-bis[[1-[[(4-methoxyphenyl)amino]carbonyl]-2-oxopropyl]azo]-; Direct Yellow 220 (related class); Disodium salt of the acid (common commercial form).
EINECS	Contact for details

Quality Control

Our production of 4,4'-Bis[[1-[[(4-Methoxyphenyl)Amino]Carbonyl]-2-Oxopropyl]Azo][1,1'-Biphenyl]-2,2'-Disulphonic Acid adheres to stringent quality protocols to ensure batch-to-batch consistency and purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling. A Certificate of Analysis (COA) detailing identity, purity, and specific test results is provided with every shipment to support your quality assurance processes.

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 stability and performance.

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms to Standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulphated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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