Description

3-Chloro-5-[(4-Hydroxy-1-Naphthalenyl)Azo]-4-Methylbenzenesulfonic Acid Sodium Salt is a high-purity azo dye intermediate and analytical reagent. This compound is valued for its precise chemical structure, which provides consistent performance in specialized synthesis and colorimetric applications. It is primarily required by manufacturers in the dye and pigment industry, as well as by research laboratories for analytical and diagnostic purposes.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of specific azo dyes and pigments, particularly for coloring textiles, leather, and paper.
• Analytical Reagent: Used in laboratory settings for colorimetric analysis and as a complexometric indicator in certain titration methods.
• Research & Development: Serves as a building block in organic synthesis for pharmaceutical and chemical research projects.
• Specialty Chemical Manufacturing: Employed in the production of functional chemicals where its specific sulfonic acid and azo groups are required.

Basic Information

Product Name	3-Chloro-5-[(4-Hydroxy-1-Naphthalenyl)Azo]-4-Methylbenzenesulfonic Acid Sodium Salt
CAS No.	6409-09-2
Molecular Formula	C17H12ClN2NaO4S
Molecular Weight	398.80 g/mol
Synonyms	Sodium 3-Chloro-5-[(4-hydroxy-1-naphthyl)azo]-4-methylbenzenesulfonate; 3-Chloro-4-methyl-5-[(4-hydroxy-1-naphthyl)azo]benzenesulfonic Acid Sodium Salt; C.I. 15620; Acid Red 88 (related color index); 1-Naphthol-4-azo-4'-chloro-5'-methyl-2'-sulfobenzene Sodium Salt; Benzenesulfonic acid, 3-chloro-5-[(4-hydroxy-1-naphthalenyl)azo]-4-methyl-, sodium salt; Azo dye intermediate 6409-09-2.
EINECS	Contact for details

Quality Control

Our production of 3-Chloro-5-[(4-Hydroxy-1-Naphthalenyl)Azo]-4-Methylbenzenesulfonic Acid Sodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and UV-Vis spectroscopy, to ensure it meets precise customer specifications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment.

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	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	Contact for details

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