Description

Sodium 4-Hydroxy-3-[(2-Hydroxy-1-Naphthyl)Azo]-5-Methylbenzenesulphonate is a high-purity azo dye intermediate and analytical reagent. This compound is valued for its precise chemical structure, which provides consistent performance in demanding synthesis and detection applications. It is primarily required by manufacturers in the dyes and pigments, analytical chemistry, and specialty chemical research sectors for developing colorants and as a chromogenic agent.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of specific red and orange azo dyes and pigments for textiles, inks, and plastics.
• Analytical Reagent: Used as a chromogenic agent or complexometric indicator in analytical chemistry and laboratory testing procedures.
• Research & Development: Serves as a crucial reagent in chemical research for studying azo coupling reactions and developing new functional materials.
• Specialty Chemical Synthesis: Employed in the manufacture of other specialty chemicals where its specific sulfonated azo structure is required.

Basic Information

Item	Details
Product Name	Sodium 4-Hydroxy-3-[(2-Hydroxy-1-Naphthyl)Azo]-5-Methylbenzenesulphonate
CAS No.	85136-64-7
Molecular Formula	C18H13N2NaO5S
Molecular Weight	392.36 g/mol
Synonyms	Benzenesulfonic acid, 4-hydroxy-3-[(2-hydroxy-1-naphthalenyl)azo]-5-methyl-, sodium salt; C.I. 15865; Acid Red 299; Sodium 3-[(2-hydroxy-1-naphthyl)azo]-4-hydroxy-5-methylbenzenesulfonate; 5-Methyl-4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]benzenesulfonic acid sodium salt; 1-Naphthol-2-azo-4-sulfo-6-methylphenol sodium salt
EINECS	Contact for details

Quality Control

Our production of Sodium 4-Hydroxy-3-[(2-Hydroxy-1-Naphthyl)Azo]-5-Methylbenzenesulphonate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided to guarantee it meets your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Reddish-brown to dark red 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.