Description

2-[[2-Oxo-1-[(2-methoxy-5-sodiosulfophenyl)aminocarbonyl]propyl]azo]-5-[N'-[3-sodiooxycarbonyl-4-[[2-oxo-1-[(4-sodiosulfophenyl)aminocarbonyl]propyl]azo]phenyl]ureido]benzoic acid sodium salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is engineered to deliver consistent color strength and excellent fastness properties in demanding applications. It is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries seeking reliable and high-performance dye precursors.

Application

• Textile Dyeing: A key intermediate for the synthesis of reactive and direct dyes for cotton, wool, and nylon fibers.
• Ink Formulation: Used in the production of high-quality pigments for printing inks, including packaging and security inks.
• Industrial Coatings: Imparts color to coatings and paints where durability and chemical resistance are required.
• Leather Finishing: Employed in dye formulations for coloring leather goods.
• Paper Coloring: Suitable for specialty paper dyeing applications requiring specific shade and brightness.
• Research & Development: Serves as a critical building block in chemical research for developing new chromophores and functional dyes.

Basic Information

Product Name	2-[[2-Oxo-1-[(2-methoxy-5-sodiosulfophenyl)aminocarbonyl]propyl]azo]-5-[N'-[3-sodiooxycarbonyl-4-[[2-oxo-1-[(4-sodiosulfophenyl)aminocarbonyl]propyl]azo]phenyl]ureido]benzoic acid sodium salt
CAS No.	6391-32-8
Molecular Formula	C38H28N8Na4O18S2
Molecular Weight	1086.8 g/mol
Synonyms	Reactive Red 198; C.I. Reactive Red 198; Sodium 2-[[2-oxo-1-[(2-methoxy-5-sulfonatophenyl)carbamoyl]propyl]hydrazinylidene]-5-[3-[3-[2-oxo-1-[(4-sulfonatophenyl)carbamoyl]propyl]hydrazinylidene]-4-ureidophenyl]ureido]benzoate; Benzoic acid, 2-[[2-oxo-1-[(2-methoxy-5-sulfophenyl)amino]carbonyl]propyl]azo]-5-[[[[3-[(2-oxo-1-[(4-sulfophenyl)amino]carbonyl]propyl]azo]-4-aminophenyl]amino]carbonyl]amino]-, sodium salt (1:4); 2-[[1-[(2-Methoxy-5-sulfophenyl)carbamoyl]-2-oxopropyl]azo]-5-[[[[3-[(1-[(4-sulfophenyl)carbamoyl]-2-oxopropyl]azo]-4-aminophenyl]carbamoyl]amino]benzoic acid sodium salt; Reactive Red 198, sodium salt
EINECS	Contact for details

Quality Control

Our production of 2-[[2-Oxo-1-[(2-methoxy-5-sodiosulfophenyl)aminocarbonyl]propyl]azo]-5-[N'-[3-sodiooxycarbonyl-4-[[2-oxo-1-[(4-sodiosulfophenyl)aminocarbonyl]propyl]azo]phenyl]ureido]benzoic acid sodium salt adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. All materials are tested against established specifications for purity, color strength, and impurity profiles. A Certificate of Analysis (COA) detailing key parameters 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). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 90.0%
Color Strength	95 - 105% (vs. Standard)
Moisture (KF Titration)	≤ 5.0%
Water Solubility	Clear solution at 1%
Heavy Metals (as Pb)	≤ 20 ppm

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