Description

2-Hydroxy-5-[(6,8-Disulfo-2-Naphtyl)Azo]Benzoic Acid Trisodium 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 critical component in specialized colorant systems. It is primarily sought by manufacturers and research laboratories in the dye, pigment, and analytical chemistry sectors.

Application

• Dye and Pigment Intermediate: A key precursor for the synthesis of specific acid dyes and pigments, particularly for textiles, leather, and paper.
• Analytical Reagent: Used as a complexometric indicator or a colorimetric reagent in analytical chemistry for the detection and quantification of metal ions.
• Biological Staining: Potential application in histological and cytological staining procedures in life science research.
• Specialty Ink Formulation: A functional component in the production of specialized inks requiring specific color fastness and solubility properties.
• Photographic Industry: Can be utilized in certain light-sensitive layers or as a filter dye in photographic materials.
• Research & Development: Serves as a building block for novel chromophores and functional materials in academic and industrial R&D.

Basic Information

Product Name	2-Hydroxy-5-[(6,8-Disulfo-2-Naphtyl)Azo]Benzoic Acid Trisodium Salt
CAS No.	6471-07-4
Molecular Formula	C17H9N2Na3O10S2
Molecular Weight	550.35 g/mol
Synonyms	Acid Red 88; C.I. 15620; 5-[(6,8-Disulfo-2-naphthyl)azo]salicylic acid trisodium salt; Trisodium 5-[(6,8-disulfonaphth-2-yl)azo]salicylate; Benzoic acid, 2-hydroxy-5-[(6,8-disulfo-2-naphthalenyl)azo]-, trisodium salt; 2-Naphthalenesulfonic acid, 6,8-disulfo-5-[(2-hydroxy-5-sulfophenyl)azo]-, trisodium salt; Azo Rubine S; Wool Red B
EINECS	229-295-6

Quality Control

Our 2-Hydroxy-5-[(6,8-Disulfo-2-Naphtyl)Azo]Benzoic Acid Trisodium Salt is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at 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.

Specification

Item	Specification
Appearance	Dark red to brownish-red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	25.0 - 35.0%
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.