Description

5-[[4-[(4-Sulphophenyl)Azo]Phenyl]Azo]Salicylic Acid is an azo dye intermediate and a high-purity organic chemical compound. This product is valued for its role as a critical precursor in the synthesis of vibrant and stable azo dyes and pigments. It is primarily needed by manufacturers in the dyestuff, textile, ink, and specialty chemical industries for producing colorants with specific performance characteristics.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of acid dyes, direct dyes, and other azo-based colorants.
• Textile Dye Manufacturing: Used to produce dyes for coloring natural and synthetic fibers, including wool, silk, and nylon.
• Ink Formulation: A precursor for pigments used in printing inks for packaging and publications.
• Research & Development: Employed in chemical research for developing new chromophores and studying azo coupling reactions.
• Specialty Chemical Synthesis: Utilized in the production of complex organic molecules for analytical reagents or functional materials.

Basic Information

Product Name	5-[[4-[(4-Sulphophenyl)Azo]Phenyl]Azo]Salicylic Acid
CAS No.	25747-21-1
Molecular Formula	C19H14N4O6S
Molecular Weight	426.40 g/mol
Synonyms	5-[(E)-[4-[(E)-(4-Sulfophenyl)diazenyl]phenyl]diazenyl]-2-hydroxybenzoic acid; 5-[[4-[(4-Sulfophenyl)azo]phenyl]azo]salicylic acid; Acid Yellow 36 intermediate; C.I. 13065; Disazo dye intermediate; Salicylic acid, 5-[[4-[(4-sulfophenyl)azo]phenyl]azo]-; 5-[(4-[(4-Sulfophenyl)azo]phenyl)azo]salicylic acid
EINECS	Contact for details

Quality Control

Our 5-[[4-[(4-Sulphophenyl)Azo]Phenyl]Azo]Salicylic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee consistency and support your quality assurance protocols.

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 degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to brownish-red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated 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.