Description

4-[[2,4-Dihydroxy-3-(Phenylazo)Phenyl]Azo]Benzenesulphonic Acid is a specialized azo dye intermediate characterized by its distinct molecular structure, which is critical for imparting color properties in various formulations. This compound matters for its role as a key precursor in synthesizing high-performance dyes and pigments, offering excellent color fastness and stability. It is primarily needed by manufacturers in the textile, leather, and specialty chemical industries seeking reliable intermediates for producing vibrant and durable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial building block in the synthesis of orange, red, and brown azo dyes for textiles and leather.
• Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics.
• Research & Development: Employed in chemical R&D for developing new chromophores and studying azo coupling reactions.
• Specialty Chemical Synthesis: Acts as an intermediate for creating functional chemicals with specific light-absorption properties.
• Analytical Reagent: Potential use as a staining agent or colorimetric indicator in laboratory settings.

Basic Information

Product Name	4-[[2,4-Dihydroxy-3-(Phenylazo)Phenyl]Azo]Benzenesulphonic Acid
CAS No.	94159-11-2
Molecular Formula	C18H14N4O5S
Molecular Weight	398.39 g/mol
Synonyms	Benzenesulfonic acid, 4-[[2,4-dihydroxy-3-(phenylazo)phenyl]azo]-; 4-[(2,4-Dihydroxy-3-phenylazophenyl)azo]benzenesulfonic acid; C.I. 12715; Acid Orange 51; Azo dye intermediate OA-51; 3-Hydroxy-4-phenylazo-4'-(phenylazo)-2,1'-azobenzene-4-sulfonic acid; 4-[(E)-[3-[(E)-Phenyldiazenyl]-2,4-dihydroxyphenyl]diazenyl]benzenesulfonic acid
EINECS	Contact for details

Quality Control

Our production of 4-[[2,4-Dihydroxy-3-(Phenylazo)Phenyl]Azo]Benzenesulphonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, to meet precise customer specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment, ensuring full traceability and compliance with relevant industry standards.

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 sealed when not in use to prevent absorption of atmospheric moisture, which can affect product quality and performance.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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