Description

2-[[7-Acetamido-1-Hydroxy-3-Sulpho-2-Naphthyl]Azo]-6-[[2-(Sulphooxy)Ethyl]Sulphonyl]Naphthalene-1-Sulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate characterized by its complex polyfunctional structure. This compound is essential for synthesizing specialized reactive and acid dyes that require excellent wash-fastness and brilliant color properties. It is a critical raw material for manufacturers in the textile, leather, and specialty ink industries seeking to produce high-performance colorants.

Application

• Primary intermediate for the synthesis of high-grade reactive dyes used in cotton and cellulose fiber dyeing.
• Key building block in the production of acid dyes for wool, silk, and nylon, providing enhanced color strength and durability.
• Used in the formulation of specialized dyes for leather coloring applications.
• Intermediate in the manufacture of dyes for paper coloration.
• Potential use in the synthesis of functional dyes for non-textile applications, including inks and coatings.
• Employed in research and development for novel chromophores and dye molecules.

Basic Information

Product Name	2-[[7-Acetamido-1-Hydroxy-3-Sulpho-2-Naphthyl]Azo]-6-[[2-(Sulphooxy)Ethyl]Sulphonyl]Naphthalene-1-Sulphonic Acid, Sodium Salt
CAS No.	93962-61-9
Molecular Formula	C24H19N3O13S3Na
Molecular Weight	700.65 g/mol (as Sodium Salt)
Synonyms	Acid Red 337 (related dye class); Reactive Dye Intermediate; 7-Acetamido-1-hydroxy-3-sulfo-2-naphthyl azo derivative; Sodium 2-[(7-acetamido-1-hydroxy-3-sulfo-2-naphthyl)azo]-6-[(2-sulfooxyethyl)sulfonyl]-1-naphthalenesulfonate; Azo dye intermediate 93962-61-9; C.I. Reactive Red 158 intermediate (potential); Polyfunctional azo dye intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Every lot undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for color value, and titration for functional group analysis. A Certificate of Analysis (COA) detailing all specifications 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 product performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1%
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	≤ 30.0%

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