Description

Trisodium Hydroxy[(4-Sulphonatophenyl)Azo]Naphthalenedisulphonate is a high-purity, water-soluble azo dye intermediate and analytical reagent. This compound is valued for its strong chromophoric properties and consistent performance in demanding industrial and laboratory processes. It is primarily required by manufacturers in the dye and pigment industry, as well as by research and quality control laboratories for use as a colorimetric indicator and reagent.

Application

• Key intermediate in the synthesis of acid dyes and direct dyes for textiles.
• Used as a colorimetric reagent and indicator in analytical chemistry and laboratory testing.
• Potential component in the formulation of specialized inks and colorants.
• Employed in research and development for photochemical studies.
• Can be used in the preparation of histological stains for biological applications.
• Acts as a tracer or marker in specific industrial fluid processes.

Basic Information

Product Name	Trisodium Hydroxy[(4-Sulphonatophenyl)Azo]Naphthalenedisulphonate
CAS No.	93904-87-1
Molecular Formula	C16H9N2Na3O10S3
Molecular Weight	586.39 g/mol
Synonyms	Acid Orange 20; C.I. 14630; Trisodium 4-hydroxy-3-[(4-sulfonatophenyl)azo]naphthalene-2,7-disulfonate; 2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-[(4-sulfophenyl)azo]-, trisodium salt; Orange GGN; Wool Orange GGN; 4-Hydroxy-3-[(4-sulfophenyl)azo]-2,7-naphthalenedisulfonic acid trisodium salt
EINECS	Contact for details

Quality Control

Our Trisodium Hydroxy[(4-Sulphonatophenyl)Azo]Naphthalenedisulphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for industrial and laboratory use. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after use to prevent absorption of atmospheric moisture.

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.