Description

4-[[1-Hydroxy-6-[[[[5-Hydroxy-6-(Phenylazo)-7-Sulpho-2-Naphthyl]Amino]Carbonyl]Amino]-3-Sulpho-2-Naphthyl]Azo]Naphthalene-1-Sulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant industrial importance. This compound is valued for its ability to impart vibrant and stable color properties in advanced dye synthesis. It is primarily required by manufacturers in the textile, ink, and specialty chemical sectors for producing high-performance dyes and pigments.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-quality reactive dyes for cotton and other cellulosic fibers.
• Textile Colorant Production: Used in manufacturing dyes that offer excellent wash-fastness and light-fastness for the textile industry.
• Specialty Ink Formulation: Serves as a precursor for pigments used in high-performance inks for packaging and digital printing.
• Functional Dye Synthesis: Employed in the research and development of dyes for non-textile applications, such as in optical materials or sensors.
• Laboratory & Analytical Reagent: Used as a standard or reference material in quality control and analytical chemistry laboratories.

Basic Information

Product Name	4-[[1-Hydroxy-6-[[[[5-Hydroxy-6-(Phenylazo)-7-Sulpho-2-Naphthyl]Amino]Carbonyl]Amino]-3-Sulpho-2-Naphthyl]Azo]Naphthalene-1-Sulphonic Acid, Sodium Salt
CAS No.	83221-77-6
Molecular Formula	C37H23N6O12S3Na3 (or related sodium salt form)
Molecular Weight	Contact for details
Synonyms	C.I. Reactive Red 198; Reactive Red 198; Sodium 4-[(1-hydroxy-6-{[(5-hydroxy-6-[(E)-phenyldiazenyl]-7-sulfo-2-naphthyl)carbamoyl]amino}-3-sulfo-2-naphthyl)diazenyl]naphthalene-1-sulfonate; 4-[[1-Hydroxy-6-[[[[5-Hydroxy-6-(Phenylazo)-7-Sulfo-2-Naphthyl]Amino]Carbonyl]Amino]-3-Sulfo-2-Naphthyl]Azo]-1-Naphthalenesulfonic Acid, Trisodium Salt; Azo dye intermediate 83221-77-6; RR 198; C.I. 182159
EINECS	Contact for details

Quality Control

Our production of 4-[[1-Hydroxy-6-[[[[5-Hydroxy-6-(Phenylazo)-7-Sulpho-2-Naphthyl]Amino]Carbonyl]Amino]-3-Sulpho-2-Naphthyl]Azo]Naphthalene-1-Sulphonic Acid, Sodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and chemical identity suitable for high-end dye manufacturing. Comprehensive Certificates of Analysis (COA) detailing assay, impurity profile, and physical specifications are provided to guarantee supply reliability and performance consistency for our global B2B clients.

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); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	95 - 105% (vs. Standard)
Moisture Content	≤ 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.