Description

Disodium 4-Hydroxy-3-[[2-Methoxy-5-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalenesulphonate is a high-purity, water-soluble anionic dye intermediate known for its excellent color strength and stability. This compound is critical for manufacturers requiring precise and consistent coloration in demanding industrial applications. It is primarily utilized by producers of specialty dyes and pigments for textiles, inks, and advanced materials, where its specific chemical structure provides superior performance characteristics.

Application

• Primary intermediate for the synthesis of reactive dyes and acid dyes used in textile coloration.
• Key component in manufacturing high-performance pigments for inks, including digital and packaging inks.
• Used in the production of specialized colorants for leather and paper.
• Intermediate for research and development of novel functional dyes with specific optical properties.
• Potential use in the formulation of biological stains and histological dyes for laboratory applications.
• Serves as a chemical building block in organic synthesis for azo-based compounds.

Basic Information

Product Name	Disodium 4-Hydroxy-3-[[2-Methoxy-5-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalenesulphonate
CAS No.	31237-02-2
Molecular Formula	C19H16N2Na2O12S3
Molecular Weight	614.48 g/mol
Synonyms	Disodium 4-hydroxy-3-[(2-methoxy-5-[(2-sulfooxyethyl)sulfonyl]phenyl)azo]-1-naphthalenesulfonate; C.I. Reactive Red 123; Reactive Red 123; Reactive Brilliant Red K-2BP; Reactive Brilliant Red K-2G; Remazol Brilliant Red 3BS; Sumifix Brilliant Red 3BS; Levafix Brilliant Red E-4BA
EINECS	Contact for details

Quality Control

Our production of Disodium 4-Hydroxy-3-[[2-Methoxy-5-[[2-(Sulphonatooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalenesulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and reliability. All material is subjected to rigorous analytical testing, including HPLC for purity and spectrophotometry for color value. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Reddish-brown to dark red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	98 - 102% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Clear solution
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	≤ 30.0%

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