Description

Sodium 3-[Ethyl[3-Methyl-4-[[4-(Phenylazo)Phenyl]Azo]Phenyl]Amino]Propanesulphonate is a specialized anionic azo dye intermediate and surfactant, known for its excellent water solubility and chromophoric properties. This compound is valued for its role in imparting color and functional characteristics in advanced material formulations. It is primarily utilized by manufacturers in the textile, ink, and specialty polymer industries seeking consistent quality and reliable supply for their production processes.

Application

• Textile Dyeing and Printing: A key intermediate for synthesizing acid and direct dyes, providing vibrant and wash-fast colors on nylon, silk, and wool fibers.
• Ink Manufacturing: Used in the formulation of inks for jet printing, packaging, and security applications due to its solubility and color strength.
• Functional Surfactant: Acts as a dispersant and leveling agent in dye baths and other chemical processes to ensure uniform color distribution.
• Polymer Additive: Incorporated into specialty polymers and coatings to introduce color or modify surface properties.
• Research & Development: Serves as a building block in organic synthesis for developing new chromophores and functional materials in academic and industrial R&D.
• Analytical Reagent: Potential use as a staining agent or indicator in specific analytical and biological assays.

Basic Information

Product Name	Sodium 3-[Ethyl[3-Methyl-4-[[4-(Phenylazo)Phenyl]Azo]Phenyl]Amino]Propanesulphonate
CAS No.	36904-62-8
Molecular Formula	C24H25N5O3SNa
Molecular Weight	486.55 g/mol
Synonyms	Acid Orange 156; C.I. 26501; Sodium 3-[ethyl[3-methyl-4-[(4-phenylazophenyl)azo]phenyl]amino]-1-propanesulfonate; 3-[Ethyl[3-methyl-4-[(4-phenylazophenyl)azo]phenyl]amino]-1-propanesulfonic acid sodium salt; Azo dye intermediate 36904-62-8; Propanesulfonic acid, 3-[(ethyl)[3-methyl-4-[(4-phenylazophenyl)azo]phenyl]amino]-, sodium salt
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards and batch-to-batch consistency. Each lot is analyzed for critical parameters including purity, identity, and impurity profile. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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