Description

2-Hydroxy-5-[(2-Methyl-4-Sulfophenyl)Azo]Benzoic Acid Disodium Salt is a high-purity azo dye intermediate and analytical reagent known for its consistent quality and reliable performance. This compound is valued for its role as a key precursor in the synthesis of specialized dyes and pigments, as well as its utility in colorimetric analysis. It is essential for manufacturers and research laboratories in the chemical, textile, and analytical reagent industries seeking a dependable supply of this specific chromophore.

Application

• Dye and Pigment Intermediate: A crucial precursor for synthesizing acid dyes, reactive dyes, and metal-complex pigments used in textile, leather, and paper coloring.
• Analytical Chemistry Reagent: Employed as a colorimetric indicator or complexing agent in spectrophotometric methods for the determination of metal ions.
• Biological Staining: Used in the preparation of histological stains for microscopy in life science research.
• Ink Formulation: Serves as a colorant component in the production of specialized inks for industrial printing.
• Research & Development: Utilized in organic synthesis and material science research for developing new functional dyes and sensors.

Basic Information

Item	Detail
Product Name	2-Hydroxy-5-[(2-Methyl-4-Sulfophenyl)Azo]Benzoic Acid Disodium Salt
CAS No.	6358-44-7
Molecular Formula	C14H10N2Na2O6S
Molecular Weight	380.28 g/mol
Synonyms	Acid Orange 20; C.I. 14600; Benzoic acid, 2-hydroxy-5-[(2-methyl-4-sulfophenyl)azo]-, disodium salt; Tropaeolin OO; Orange II; 2-Naphthol Orange; Sodium 4-[(2-hydroxy-5-sulfophenyl)azo]-3-methylbenzenesulfonate; 2-Hydroxy-5-[(2-methyl-4-sulfophenyl)azo]benzoic acid sodium salt
EINECS	228-778-7

Quality Control

Our 2-Hydroxy-5-[(2-Methyl-4-Sulfophenyl)Azo]Benzoic Acid Disodium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and composition. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your 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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality.

Specification

Item	Specification
Appearance	Orange to red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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