Description

Trisodium 2-[[6-[[4-[[6-[(3-amino-4-methylbenzoyl)amino]-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 with a complex polycyclic structure. This compound is valued for its role as a critical precursor in the synthesis of high-performance dyes and pigments, offering excellent color strength and stability. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce vivid and durable colors. Its functional groups make it suitable for creating dyes with specific affinity for various substrates.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the manufacture of high-grade reactive dyes used for coloring cotton, wool, and other cellulosic fibers.
• Pigment Synthesis: Used in the production of organic pigments for industrial paints, inks, and plastics, where lightfastness and chemical resistance are required.
• Specialty Dyes for Inkjet Inks: Serves as a precursor for dyes used in high-quality digital printing inks, ensuring color gamut and print durability.
• Research & Development: Employed in chemical R&D laboratories for developing novel chromophores and studying azo dye chemistry and applications.
• Functional Dye Production: Potential use in creating dyes for non-textile applications such as sensors or optical materials due to its complex structure.

Basic Information

Product Name	Trisodium 2-[[6-[[4-[[6-[(3-amino-4-methylbenzoyl)amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]-3-methylbenzoyl]amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]benzoate
CAS No.	72152-52-4
Molecular Formula	C46H30N6Na3O14S2
Molecular Weight	1048.91 g/mol (approx.)
Synonyms	Benzoic acid, 2-[[6-[[4-[[6-[(3-amino-4-methylbenzoyl)amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-3-methylbenzoyl]amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-, trisodium salt; C.I. Reactive Red 238 (related); Trisodium 6,6'-((4-((3-amino-4-methylbenzoyl)amino)phenyl)bis(azo))bis(1-hydroxy-3-sulphonato-2-naphthoate) (variant); Azo dye intermediate 72152-52-4; Reactive dye precursor; Sulfonated azo dye intermediate.
EINECS	Contact for details

Quality Control

Our trisodium azo dye intermediate is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profile, spectrophotometric analysis for color value, and identification by IR and UV-Vis. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed immediately after use to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Moisture Content (KF)	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution at 1%

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