Description

5-[(5-Sulpho-2-Naphthyl)Azo]Salicylic Acid, Sodium Salt is a synthetic azo dye intermediate and analytical reagent known for its distinct chromophoric properties. This compound is valued for its ability to form stable, colored complexes with various metal ions, making it a critical component in specialized detection and coloration processes. It is primarily utilized by manufacturers and research laboratories in the chemical, analytical, and specialty materials sectors.

Application

• Analytical Chemistry Reagent: Used as a metallochromic indicator and complexometric titrant for the detection and quantification of metal ions such as aluminum, iron, and rare earth elements.
• Dye and Pigment Intermediate: Serves as a key precursor in the synthesis of specific azo dyes and pigments for textiles, inks, and specialty coatings.
• Research & Development: Employed in academic and industrial R&D for studying coordination chemistry, developing new colorimetric assays, and sensor technologies.
• Photographic Industry: Can be utilized in certain photographic processes and light-sensitive material formulations.
• Catalyst and Additive Synthesis: Acts as a ligand or building block in the preparation of metal-organic catalysts and functional additives.

Basic Information

Item	Details
Product Name	5-[(5-Sulpho-2-Naphthyl)Azo]Salicylic Acid, Sodium Salt
CAS No.	83784-08-1
Molecular Formula	C17H11N2NaO6S
Molecular Weight	394.33 g/mol
Synonyms	Aluminon, Sodium Salt; 5-[(5-Sulfo-2-naphthalenyl)azo]-2-hydroxybenzoic acid, sodium salt; Aurintricarboxylic acid, ammonium salt (related); C.I. Mordant Violet 39; Acid Chrome Violet K; 2-Hydroxy-5-[(2-hydroxy-5-sulfophenyl)azo]benzoic acid sodium salt (isomer); Ammonium aurintricarboxylate (common name for related compound)
EINECS	Contact for details

Quality Control

Our 5-[(5-Sulpho-2-Naphthyl)Azo]Salicylic Acid, Sodium Salt is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A Certificate of Analysis (COA) detailing specifications such as assay, impurity profile, and physical characteristics is provided with every shipment to guarantee it meets your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is light-sensitive (store away from light). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Orange to brownish-red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Solubility	Soluble in water, slightly soluble in ethanol
Heavy Metals (as Pb)	≤ 20 ppm

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