Description

Trisodium 5-(Acetylamino)-4-Hydroxy-3-[[2-Methoxy-5-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonate is a high-purity, water-soluble anionic dye intermediate of significant commercial importance. This compound is valued for its ability to impart vibrant and stable coloration, making it a critical precursor in the synthesis of advanced dyes and pigments. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries seeking reliable and consistent performance in their formulations.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes used for coloring cotton, viscose, and other cellulosic fibers.
• Textile Dye Manufacturing: Imparts specific hue and fastness properties in the production of dyes for the textile industry.
• Inkjet Ink Formulations: Used in the development of specialized colorants for high-performance digital and textile printing inks.
• Paper Coloring: Serves as a colorant intermediate in the manufacture of dyes for specialty paper products.
• Leather Dye Production: Employed in the synthesis of dyes for the uniform and durable coloring of leather goods.
• Research & Development: Utilized in chemical R&D for creating novel chromophores and studying structure-property relationships in dye chemistry.

Basic Information

Product Name	Trisodium 5-(Acetylamino)-4-Hydroxy-3-[[2-Methoxy-5-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonate
CAS No.	85455-35-2
Molecular Formula	C23H19N3Na3O16S4
Molecular Weight	~819.62 g/mol (as trisodium salt)
Synonyms	5-Acetamido-4-hydroxy-3-((2-methoxy-5-((2-sulfooxyethyl)sulfonyl)phenyl)azo)naphthalene-2,7-disulfonic acid trisodium salt; Reactive Dye Intermediate; C.I. Reactive Red 238 (related); Trisodium 5-acetylamino-4-hydroxy-3-[2-methoxy-5-(2-sulfonatooxyethylsulfonyl)phenylazo]naphthalene-2,7-disulfonate; Azo dye intermediate; Anionic dye precursor.
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Quality is verified through comprehensive analytical testing including HPLC for assay and impurity profiling. Certificates of Analysis (COA) detailing purity, identity, and relevant specifications are provided with each shipment to support your quality assurance processes.

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). Keep away from incompatible materials and sources of ignition. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content	Max. 5.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	Max. 20 ppm
Solubility in Water	Freely soluble

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