Description

3-[6-[n-Ethyl-n-(p-Methylsulfonylaminophenyl)Carbamoyl]-5-Hydroxy-8-(2-Methylsulfonyl-4-Nitrophenylazo)-1-Naphtylaminosulfonyl]Benzenesulfonic Acid Sodium Salt is a high-purity, complex azo dye intermediate essential for producing vivid and stable colorants. Its precise molecular structure is engineered to deliver superior chromophore properties, including excellent lightfastness and thermal stability in demanding applications. This compound is a critical raw material for manufacturers in the textile, ink, and specialty polymer industries seeking to develop high-performance pigments and dyes.

Application

• Primary Intermediate for Reactive Dyes: Synthesis of high-grade reactive dyes for cotton, wool, and nylon fibers, offering excellent wash and light fastness.
• Pigment Manufacturing: Used in the production of high-performance organic pigments for industrial paints, coatings, and plastics.
• Inkjet Ink Formulation: A key component in the synthesis of dyes for professional and industrial inkjet printing, ensuring color vibrancy and durability.
• Specialty Chemical Synthesis: Serves as a building block for advanced functional chemicals used in research and material science.
• Textile Printing: Integral to the creation of dyes for textile printing processes requiring sharp color definition and resistance to fading.

Basic Information

Product Name	3-[6-[n-Ethyl-n-(p-Methylsulfonylaminophenyl)Carbamoyl]-5-Hydroxy-8-(2-Methylsulfonyl-4-Nitrophenylazo)-1-Naphtylaminosulfonyl]Benzenesulfonic Acid Sodium Salt
CAS No.	97344-69-9
Molecular Formula	C33H29N6O11S3Na
Molecular Weight	812.86 g/mol
Synonyms	Sodium 3-({6-[(4-{[(ethyl)(4-{[(methylsulfonyl)amino]sulfonyl}phenyl)carbamoyl]amino}-5-hydroxy-8-[(2-methylsulfonyl-4-nitrophenyl)diazenyl]naphthalen-1-yl)sulfamoyl]phenyl)sulfonyl)propanoate (IUPAC); Benzenesulfonic acid, 3-[[6-[[[ethyl[[4-[(methylsulfonyl)amino]phenyl]amino]carbonyl]amino]-5-hydroxy-8-[(2-(methylsulfonyl)-4-nitrophenyl)azo]-1-naphthalenyl]amino]sulfonyl]-, sodium salt; Reactive Dye Intermediate; Azo Dye Intermediate 97344-69-9; CI Reactive Red 198 Intermediate (related)
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems, ensuring batch-to-batch consistency and purity. Every lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation. A detailed Certificate of Analysis (COA) documenting assay, impurity profile, and physical characteristics 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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent moisture absorption and degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%

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