Description

Trisodium 7-Hydroxy-8-[(4-Sulphonatophenyl)Azo]Naphthalene-1,3-Disulphonate is a high-purity, water-soluble azo dye intermediate. This compound is valued for its precise chemical structure and consistent performance in demanding synthesis processes. It is primarily utilized by manufacturers in the dye and pigment, textile, and specialty chemical industries for producing vibrant and stable colorants.

Application

• Key intermediate for the synthesis of acid dyes and direct dyes.
• Used in the production of pigments for inks, plastics, and coatings.
• Employed in textile dyeing and printing processes.
• Acts as a colorant precursor in the manufacture of leather dyes.
• Utilized in research and development of new chromophores and functional dyes.
• Potential use in the formulation of biological stains and indicators.

Basic Information

Product Name	Trisodium 7-Hydroxy-8-[(4-Sulphonatophenyl)Azo]Naphthalene-1,3-Disulphonate
CAS No.	84030-17-1
Molecular Formula	C16H9N2Na3O10S3
Molecular Weight	586.39 g/mol
Synonyms	7-Hydroxy-8-[(4-sulfophenyl)azo]-1,3-naphthalenedisulfonic acid trisodium salt; Acid Orange 20 (C.I. 14600); Trisodium 8-[(4-sulfophenyl)azo]-7-hydroxynaphthalene-1,3-disulfonate; Naphthol Orange; Orange II sodium salt; C.I. 14600; 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-[(4-sulfophenyl)azo]-, trisodium salt
EINECS	Contact for details

Quality Control

Our production of Trisodium 7-Hydroxy-8-[(4-Sulphonatophenyl)Azo]Naphthalene-1,3-Disulphonate adheres to stringent quality management protocols. Every batch is tested to ensure high purity and consistency, meeting the specifications required for industrial dye synthesis. A Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment to guarantee supply reliability and product integrity.

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) and light-sensitive; appropriate handling is required to maintain stability and prevent degradation.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms
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.