Description

2-[(2-Hydroxy-1-Naphthyl)Azo]Naphthalenesulphonic Acid is a specialized 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 specific high-precision applications. It is primarily sought by manufacturers and research laboratories in the chemical synthesis, analytical chemistry, and specialty materials sectors.

Application

• As a key chelating agent and chromogenic reagent in analytical chemistry for the spectrophotometric determination of metal ions.
• As a specialized dye intermediate in the synthesis of complex azo dyes and pigments for niche industrial applications.
• In research and development for studying coordination chemistry and the properties of metal-organic complexes.
• Potential use as a stain or indicator in specific histological or microbiological laboratory procedures.
• As a functional additive in the development of advanced materials where specific light-absorption properties are required.

Basic Information

Product Name	2-[(2-Hydroxy-1-Naphthyl)Azo]Naphthalenesulphonic Acid
CAS No.	29128-55-0
Molecular Formula	C₂₀H₁₄N₂O₄S
Molecular Weight	378.40 g/mol
Synonyms	1-Naphthalenesulfonic acid, 2-[(2-hydroxy-1-naphthalenyl)azo]-; C.I. 15620; Acid Orange 20; Orange II; Tropaeolin OO; 2-[(2-Hydroxy-1-naphthyl)azo]naphthalene-1-sulfonic acid; 2-Hydroxy-1-naphthylazonaphthalenesulphonic acid; 2-(2-Hydroxy-1-naphthylazo)-1-naphthalenesulfonic acid
EINECS	249-455-8

Quality Control

Our production of 2-[(2-Hydroxy-1-Naphthyl)Azo]Naphthalenesulphonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and reliability. Each lot is analyzed using advanced techniques like HPLC and spectrophotometry to verify identity, purity, and performance characteristics. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance processes.

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 when not in use to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Specific Absorbance	Contact for details

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