Description

5-Acetamido-4-Hydroxy-3-[[2-Methoxy-5-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonic Acid, Potassium Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its complex, multi-sulfonated structure provides excellent solubility and binding properties, making it a critical precursor for synthesizing specialized dyes and pigments. This compound is primarily sought by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant, stable colorants.

Application

• Primary Intermediate for Reactive Dyes: Key building block in the synthesis of high-grade reactive dyes for cotton and cellulose fiber dyeing.
• Specialty Ink Production: Used in formulating inks for jet printing, security printing, and other high-performance applications requiring specific color fastness.
• Functional Dye Synthesis: Serves as a precursor for dyes used in biological staining, pH indicators, and other analytical reagents.
• Pigment Manufacturing: Employed in the production of lake pigments and other colorants for plastics and coatings.
• Research & Development: Utilized in chemical research for developing novel chromophores and studying azo dye chemistry.

Basic Information

Item	Details
Product Name	5-Acetamido-4-Hydroxy-3-[[2-Methoxy-5-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonic Acid, Potassium Sodium Salt
CAS No.	85940-67-6
Molecular Formula	C21H18KxNayN3O15S4 (Contact for exact stoichiometry)
Molecular Weight	Contact for details
Synonyms	Reactive Dye Intermediate 85940-67-6; Azo Naphthalene Disulfonate Salt; C.I. Reactive Red 198 Intermediate; Potassium Sodium Salt of Azo Dye Acid; 5-Acetamido-4-hydroxy-3-[(2-methoxy-5-[(2-sulfooxyethyl)sulfonyl]phenyl)azo]naphthalene-2,7-disulfonic Acid Salt; 85940-67-6 Dye Precursor; Sulfonated Azo Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high chemical purity. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every 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). The product is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content	Max. 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals	Max. 20 ppm

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