Description

3-[[4-[(4-Ethoxyphenyl)Azo]-3-Methylphenyl]Azo]Benzenesulfonic Acid Sodium Salt is a high-purity azo dye intermediate and colorant, valued for its precise chemical structure and consistent performance. This compound is essential for manufacturers requiring reliable and vibrant color development in demanding applications. It is primarily utilized by the textile, ink, and specialty chemical industries for producing high-quality dyes and pigments.

Application

• Primary intermediate for the synthesis of high-performance azo dyes and pigments.
• Key colorant component in the manufacturing of textile dyes for fabrics and fibers.
• Used in the formulation of printing inks for packaging and publications.
• Employed in the production of leather dyes and colorants.
• Acts as a functional intermediate in specialty chemical and research and development laboratories.
• Potential use as a colorimetric reagent or indicator in analytical chemistry.

Basic Information

Product Name	3-[[4-[(4-Ethoxyphenyl)Azo]-3-Methylphenyl]Azo]Benzenesulfonic Acid Sodium Salt
CAS No.	71701-28-5
Molecular Formula	C22H21N4NaO4S
Molecular Weight	460.48 g/mol
Synonyms	Sodium 3-[[4-[(4-ethoxyphenyl)azo]-3-methylphenyl]azo]benzenesulfonate; Benzenesulfonic acid, 3-[[4-[(4-ethoxyphenyl)azo]-3-methylphenyl]azo]-, sodium salt; C.I. Disperse Yellow 114; Disperse Yellow 114; 3-((4-((4-Ethoxyphenyl)diazenyl)-3-methylphenyl)diazenyl)benzenesulfonic acid sodium salt; Azo dye intermediate 71701-28-5; Sodium 3-((4-((4-ethoxyphenyl)diazenyl)-o-tolyl)diazenyl)benzenesulfonate
EINECS	Contact for details

Quality Control

Our 3-[[4-[(4-Ethoxyphenyl)Azo]-3-Methylphenyl]Azo]Benzenesulfonic Acid Sodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the specifications required for industrial and specialty chemical applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are 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). This product is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to brownish-red powder or crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents	Meets ICH guidelines

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