Description

4-Hydroxy-3-[[1-Sulpho-6-[[2-(Sulphooxy)Ethyl]Sulphonyl]-2-Naphthyl]Azo]Naphthalene-2,7-Disulphonic Acid, Potassium Sodium Salt is a high-purity, water-soluble azo dye intermediate characterized by its multiple sulphonic acid groups. This compound is valued for its ability to impart vivid and stable coloration, particularly in shades of red and violet, with excellent fastness properties. It is a critical raw material for manufacturers in the textile, leather, ink, and specialty paper industries seeking to produce high-performance dyes and pigments.

Application

• Textile Dyeing: Primary application as a key intermediate for synthesizing reactive and acid dyes for cotton, wool, silk, and nylon.
• Leather Finishing: Used in the production of dyes for coloring leather goods, providing deep, uniform shades.
• Ink Manufacturing: Serves as a colorant intermediate in the formulation of printing inks for packaging and publications.
• Paper Coloring: Employed in the manufacture of dyes for specialty and decorative papers.
• Biological Staining: Potential use as an intermediate for histological stains in laboratory settings.
• Liquid Crystal Displays (LCDs): Can be utilized in the synthesis of dyes for color filters in display technologies.

Basic Information

Product Name	4-Hydroxy-3-[[1-Sulpho-6-[[2-(Sulphooxy)Ethyl]Sulphonyl]-2-Naphthyl]Azo]Naphthalene-2,7-Disulphonic Acid, Potassium Sodium Salt
CAS No.	85567-11-9
Molecular Formula	C22H13KN2NaO16S4
Molecular Weight	~776.73 g/mol
Synonyms	Reactive Red 198; C.I. Reactive Red 198; Potassium sodium 4-hydroxy-3-((1-sulfo-6-((2-(sulfooxy)ethyl)sulfonyl)-2-naphthyl)azo)naphthalene-2,7-disulfonate; 4-Hydroxy-3-((1-sulfo-6-((2-(sulfooxy)ethyl)sulfonyl)-2-naphthalenyl)azo)-2,7-naphthalenedisulfonic acid potassium sodium salt; Reactive Red KE-3B; Levafix Red E-4BA; Procion Red H-E3B
EINECS	Contact for details

Quality Control

Our production of 4-Hydroxy-3-[[1-Sulpho-6-[[2-(Sulphooxy)Ethyl]Sulphonyl]-2-Naphthyl]Azo]Naphthalene-2,7-Disulphonic Acid, Potassium Sodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure high purity, consistent strength, and precise color value. Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are available upon request to support your quality assurance and regulatory compliance needs.

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 material is hygroscopic (moisture-sensitive); therefore, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark Red to Violet Powder
Identification (IR)	Conforms to Structure
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Moisture (KF Titration)	≤ 5.0%
Water Solubility	Clear Solution
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	6.0 - 8.0

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