Description

Trisodium 5-(Benzoylamino)-4-Hydroxy-3-[[4-Methoxy-3-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble anionic dye intermediate characterized by its complex polycyclic structure and multiple sulfonate groups. This compound matters for its role as a critical precursor in the synthesis of high-value, colorfast dyes and pigments, particularly reactive and acid dyes for demanding applications. Industrial manufacturers and R&D laboratories in the textile, leather, ink, and specialty chemical sectors require this precise intermediate to develop products with superior color strength, wash-fastness, and light stability.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the manufacture of high-performance reactive dyes for cotton, viscose, and other cellulosic fibers.
• Acid Dye Synthesis: Used in producing acid dyes for coloring wool, silk, nylon, and leather, offering excellent leveling and wet-fastness properties.
• Specialty Ink Formulations: Employed in the development of inks for inkjet printing, security printing, and other applications requiring specific chromaticity and stability.
• Pigment Manufacturing: Serves as a functional intermediate in the synthesis of certain high-grade organic pigments.
• Research & Development: Utilized in chemical research for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Analytical Chemistry: Can be used as a standard or reagent in specific analytical methods due to its well-defined structure.

Basic Information

Product Name	Trisodium 5-(Benzoylamino)-4-Hydroxy-3-[[4-Methoxy-3-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonate
CAS No.	84083-06-7
Molecular Formula	C26H19N3Na3O16S4
Molecular Weight	851.66 g/mol (anhydrous)
Synonyms	5-(Benzoylamino)-4-hydroxy-3-((4-methoxy-3-((2-sulfooxy)ethyl)sulfonyl)phenyl)azo)naphthalene-2,7-disulfonic acid trisodium salt; Reactive Dye Intermediate; C.I. Reactive Red 238 (related); Trisodium 5-benzamido-4-hydroxy-3-((4-methoxy-3-((2-sulfonatooxy)ethyl)sulfonyl)phenyl)azo)naphthalene-2,7-disulfonate; Azo dye intermediate, sulfonated; Benzenesulfonic acid derivative, azo-linked
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and high purity. Every lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation and spectrophotometric analysis for color value. A detailed Certificate of Analysis (COA) documenting assay, impurity profile, physical characteristics, and other relevant parameters is provided with each shipment to support your quality assurance protocols.

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 nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect handling and performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark red to brown powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1% w/v
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	6.0 - 8.0

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