Description

Sodium 3-[[4-[(4-Hydroxyphenyl)Azo]-3-Methoxyphenyl]Azo]Benzenesulphonate is a high-purity azo dye intermediate and functional chemical compound. It is valued for its precise chemical structure, which provides excellent chromophoric properties and reactivity for synthesizing specialized dyes and pigments. This product is essential for manufacturers in the textile, ink, and specialty chemical industries requiring consistent quality and performance in their formulations.

Application

• Primary intermediate for the synthesis of azo dyes and pigments, particularly for textile coloring.
• Key component in the production of specialty inks for packaging and printing applications.
• Used in the formulation of colorants for plastics and polymeric materials.
• Research and development chemical for novel optical materials and sensors.
• Potential use as a staining agent or colorimetric indicator in analytical chemistry.
• Starting material for high-value, functional dyes used in niche industrial applications.

Basic Information

Product Name	Sodium 3-[[4-[(4-Hydroxyphenyl)Azo]-3-Methoxyphenyl]Azo]Benzenesulphonate
CAS No.	68400-29-3
Molecular Formula	C19H14N4NaO5S
Molecular Weight	433.39 g/mol
Synonyms	Sodium 4-Hydroxy-3-[(4-sulfophenyl)azo]-4'-methoxyazobenzene-3'-sulfonate; Benzenesulfonic acid, 3-[[4-[(4-hydroxyphenyl)azo]-3-methoxyphenyl]azo]-, sodium salt; C.I. 26050; Diazol Fast Red 2B; Azo dye intermediate 68400-29-3; 3-[[4-[(4-Hydroxyphenyl)Azo]-3-Methoxyphenyl]Azo]Benzenesulphonic Acid Sodium Salt
EINECS	Contact for details

Quality Control

Our production of Sodium 3-[[4-[(4-Hydroxyphenyl)Azo]-3-Methoxyphenyl]Azo]Benzenesulphonate adheres to strict quality management protocols. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency meet the high standards required for industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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