Description

Trisodium 2-[[6-[[4-[[6-(Benzoylamino)-1-Hydroxy-3-Sulphonato-2-Naphthyl]Azo]-3-Methylbenzoyl]Amino]-1-Hydroxy-3-Sulphonato-2-Naphthyl]Azo]Benzoate is a high-purity, water-soluble azo dye intermediate characterized by its multi-sulfonated naphthalene structure. This compound is essential for synthesizing high-value, colorfast dyes and pigments, particularly for demanding applications requiring excellent light and wash fastness. It is a critical raw material for manufacturers in the textile, leather, and specialty ink industries seeking to produce vibrant and durable colors.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-performance reactive dyes used in cotton and cellulose fiber dyeing.
• Direct Dye Production: Used in the manufacture of direct dyes for paper, leather, and textile applications requiring good substantivity.
• Acid Dye Synthesis: Serves as a precursor for acid dyes applied to wool, silk, and nylon fibers.
• Pigment Manufacturing: Intermediate in the production of high-quality organic pigments for inks, plastics, and coatings.
• Specialty Colorants: Used in the formulation of specialized colorants for food packaging inks and other niche industrial applications.
• Research & Development: Serves as a standard or experimental compound in R&D labs for developing new chromophores and dye systems.

Basic Information

Product Name	Trisodium 2-[[6-[[4-[[6-(Benzoylamino)-1-Hydroxy-3-Sulphonato-2-Naphthyl]Azo]-3-Methylbenzoyl]Amino]-1-Hydroxy-3-Sulphonato-2-Naphthyl]Azo]Benzoate
CAS No.	72152-50-2
Molecular Formula	C42H26N6Na3O13S2
Molecular Weight	964.78 g/mol
Synonyms	Trisodium 6,6'-((3-methyl-4-((6-((3-sulphonatobenzoyl)amino)-1-hydroxy-3-sulphonato-2-naphthyl)azo)benzoyl)imino)bis(1-hydroxy-3-sulphonato-2-naphthylazo)benzoate; C.I. Reactive Red 238; Reactive Red 238; Benzoic acid, 2,2'-(6,6'-((3-methyl-4-((6-((3-sulfobenzoyl)amino)-1-hydroxy-3-sulfo-2-naphthyl)azo)benzoyl)imino)bis(1-hydroxy-3-sulfo-2-naphthylazo))di-, trisodium salt; Trisodium salt of a disazo dye derived from diazotized 6-aminobenzoyl-1-hydroxy-3-sulfonaphthalene and coupled components.
EINECS	Contact for details

Quality Control

Our Trisodium 2-[[6-[[4-[[6-(Benzoylamino)-1-Hydroxy-3-Sulphonato-2-Naphthyl]Azo]-3-Methylbenzoyl]Amino]-1-Hydroxy-3-Sulphonato-2-Naphthyl]Azo]Benzoate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) documenting all critical parameters are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (Karl Fischer)	≤ 5.0%
Water Solubility	Freely soluble
pH (1% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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