Description

5-[[4-[(4-Sulphophenyl)Azo]Phenyl]Azo]Salicylic Acid, Sodium Salt is a high-purity azo dye intermediate and analytical reagent. This compound is valued for its precise chromophoric properties and consistent performance in demanding synthesis and testing applications. It is primarily utilized by manufacturers and R&D laboratories in the dye, pigment, and analytical chemistry sectors. Our supply is characterized by stringent quality control to ensure batch-to-batch reliability for industrial and research use.

Application

• Dye and Pigment Intermediate: A key precursor for synthesizing specific azo dyes and colorants, particularly for textiles and inks.
• Analytical Reagent: Used as a chromogenic agent or indicator in complexometric titrations and colorimetric assays in laboratory settings.
• Research & Development: Serves as a building block in organic synthesis for novel chromophores and functional materials in academic and industrial R&D.
• Specialty Chemical Synthesis: Employed in the production of specialized chemicals requiring azo-linked aromatic structures.

Basic Information

Product Name	5-[[4-[(4-Sulphophenyl)Azo]Phenyl]Azo]Salicylic Acid, Sodium Salt
CAS No.	85188-12-1
Molecular Formula	C19H13N4NaO6S
Molecular Weight	448.38 g/mol
Synonyms	Acid Red 359 (Sodium Salt); 5-[(E)-[4-[(E)-(4-Sulfophenyl)diazenyl]phenyl]diazenyl]-2-hydroxybenzoic Acid Sodium Salt; Sodium 5-[[4-[(4-Sulfophenyl)azo]phenyl]azo]salicylate; C.I. 18215; Mordant Yellow 5R; Salicylic Acid Azo Dye Derivative; 4,4'-(1,3,4-Thiadiazole-2,5-diyl)dianiline (related intermediate); Azo Dye Intermediate 85188-12-1
EINECS	Contact for details

Quality Control

Our 5-[[4-[(4-Sulphophenyl)Azo]Phenyl]Azo]Salicylic Acid, Sodium Salt is produced under a rigorous quality management system. Each batch is tested to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance for your applications.

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 to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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