Description

Benzoic Acid, 2-[(2-Hydroxy-6-Sulfo-1-Naphthalenyl)Azo]-, Disodium Salt is a high-purity azo dye intermediate and analytical reagent. This compound is valued for its strong chromophoric properties and water solubility, making it a versatile building block in specialized colorant synthesis. It is primarily required by manufacturers in the dye and pigment industry, as well as by research laboratories for analytical and diagnostic applications.

Application

• Dye and Pigment Intermediate: A key precursor for the synthesis of acid dyes, direct dyes, and metal-complex dyes used in textiles, leather, and paper.
• Analytical Reagent: Used in laboratory settings as a colorimetric reagent or indicator in complexometric titrations and metal ion detection.
• Biological Staining: Potential application in the formulation of histological stains for microscopic analysis.
• Ink Formulation: Serves as a colorant component in the production of specialized inks for industrial marking or printing.
• Research & Development: Employed in chemical research for studying azo coupling reactions and developing new chromogenic compounds.

Basic Information

Product Name	Benzoic Acid, 2-[(2-Hydroxy-6-Sulfo-1-Naphthalenyl)Azo]-, Disodium Salt
CAS No.	5858-87-7
Molecular Formula	C17H10N2Na2O6S
Molecular Weight	416.31 g/mol
Synonyms	2-[(2-Hydroxy-6-sulfo-1-naphthyl)azo]benzoic acid disodium salt; C.I. 15865; Acid Red 88; Disodium 2-[(2-hydroxy-6-sulphonato-1-naphthyl)azo]benzoate; Amido Naphthol Red G; Lissamine Red 2G; Naphthalene Red G; Wool Red G
EINECS	227-490-3

Quality Control

Our production of Benzoic Acid, 2-[(2-Hydroxy-6-Sulfo-1-Naphthalenyl)Azo]-, Disodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure consistent purity, color strength, and chemical identity. A Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to guarantee compliance with 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). Keep away from incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature (store away from light), prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Reddish-brown to dark red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 30.0%
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.