Description

Sodium 2,5-Dichloro-4-[(2-Hydroxy-1-Naphthyl)Azo]Benzenesulphonate is a high-purity azo dye intermediate and analytical reagent. This compound is valued for its precise chemical structure, which provides excellent chromogenic properties and stability in demanding formulations. It is essential for manufacturers and research laboratories requiring consistent, high-quality intermediates for the production of specialized dyes, pigments, and colorimetric detection agents.

Application

• Dye and Pigment Intermediate: Primary use in the synthesis of high-performance azo dyes for textiles, inks, and plastics.
• Analytical Chemistry Reagent: Employed as a chromogenic agent or indicator in complexometric titrations and spectrophotometric analysis.
• Research & Development: Serves as a key building block in organic synthesis for novel colorants and functional materials.
• Specialty Chemical Manufacturing: Used in formulating specialized industrial colorants for non-textile applications like coatings and specialty papers.
• Laboratory Standards: Acts as a certified reference material (CRM) for quality control and method validation in analytical labs.

Basic Information

Product Name	Sodium 2,5-Dichloro-4-[(2-Hydroxy-1-Naphthyl)Azo]Benzenesulphonate
CAS No.	97404-04-1
Molecular Formula	C16H9Cl2N2NaO4S
Molecular Weight	419.21 g/mol
Synonyms	2,5-Dichloro-4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonic Acid Sodium Salt; C.I. Mordant Yellow 5; Acid Mordant Yellow GG; Benzenesulfonic acid, 2,5-dichloro-4-[(2-hydroxy-1-naphthalenyl)azo]-, sodium salt; Sodium 2,5-dichloro-4-(2-hydroxy-1-naphthylazo)benzenesulfonate; Mordant Yellow 5 sodium salt; LZ 6170 (potential trade name)
EINECS	Contact for details

Quality Control

Our production of Sodium 2,5-Dichloro-4-[(2-Hydroxy-1-Naphthyl)Azo]Benzenesulphonate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and UV-Vis spectroscopy, to ensure it meets precise customer specifications. A detailed Certificate of Analysis (COA) is provided with each shipment, guaranteeing traceability and compliance with relevant industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Clear, orange solution

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