Description

5-(Benzoylamino)-4-Hydroxy-3-[[1-Sulpho-6-[[2-(Sulphooxy)Ethyl]Sulphonyl]-2-Naphthyl]Azo]Naphthalene-2,7-Disulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its complex poly-sulphonated structure makes it a key precursor for synthesizing reactive and direct dyes with excellent wash-fastness and brilliant shades. This compound is essential for manufacturers in the textile and specialty chemical industries seeking to produce high-performance colorants for natural and synthetic fibers.

Application

• Primary Intermediate for Reactive Dyes: Used in the synthesis of high-quality reactive dyes for cotton, viscose, and other cellulosic fibers.
• Direct Dye Manufacturing: Serves as a crucial building block for producing direct dyes with enhanced solubility and affinity.
• Specialty Colorant Production: Employed in creating complex, high-value dyes for technical textiles and niche applications.
• Research & Development: Utilized in chemical R&D for developing new dye structures and studying azo coupling reactions.
• Ink and Pigment Formulation: Can be used in the development of specialized inks where specific color properties and solubility are required.

Basic Information

Item	Details
Product Name	5-(Benzoylamino)-4-Hydroxy-3-[[1-Sulpho-6-[[2-(Sulphooxy)Ethyl]Sulphonyl]-2-Naphthyl]Azo]Naphthalene-2,7-Disulphonic Acid, Sodium Salt
CAS No.	85586-40-9
Molecular Formula	C35H25N4Na5O19S5
Molecular Weight	~1190.0 g/mol (as Sodium Salt)
Synonyms	Reactive Dye Intermediate 85586-40-9; Sodium 5-(Benzoylamino)-4-hydroxy-3-{[1-sulfo-6-[(2-sulfooxyethyl)sulfonyl]-2-naphthyl]diazenyl}naphthalene-2,7-disulfonate; C.I. Reactive Red 198 Intermediate; Azo Dye Precursor; 5-Benzamido-4-hydroxy-3-[(6-[(2-sulfonatooxyethyl)sulfonyl]-1-sulfo-2-naphthyl)azo]naphthalene-2,7-disulfonic acid sodium salt
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. Every lot is analyzed using advanced techniques like HPLC to confirm identity and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and related substances is provided with each shipment, ensuring full traceability and compliance with your internal specifications.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product stability and handling properties.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Purity (HPLC, Area%)	≥ 98.0%
Water Content (KF)	≤ 5.0%
Solubility (in Water)	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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