Description

4-Hydroxy-3-[[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonic Acid, Potassium Sodium Salt is a high-purity, water-soluble azo dye intermediate and analytical reagent. This compound is valued for its strong chromophoric properties and excellent solubility in aqueous systems, making it a critical component in specialized colorant synthesis. It is primarily sought by manufacturers in the dye and pigment industry, as well as research laboratories developing advanced colorimetric detection methods and specialty chemical formulations.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-grade reactive dyes for textiles, particularly cotton and other cellulose fibers.
• Specialty Pigment Manufacturing: Used in the production of pigments requiring high color strength and specific solubility profiles for inks and coatings.
• Analytical Chemistry Reagent: Employed as a chromogenic agent or indicator in complexometric titrations and biochemical assays.
• Research & Development: Serves as a model compound in photochemical studies and for developing new azo-based functional materials.
• Laboratory Staining: Potential use in histological or microbiological staining procedures due to its specific color properties.

Basic Information

Product Name	4-Hydroxy-3-[[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonic Acid, Potassium Sodium Salt
CAS No.	85940-65-4
Molecular Formula	C18H12KxNayN2O14S4 (x+y=3)
Molecular Weight	Contact for details
Synonyms	Reactive Dye Intermediate 85940-65-4; Potassium Sodium 4-Hydroxy-3-[(4-((2-sulfooxyethyl)sulfonyl)phenyl)azo]naphthalene-2,7-disulfonate; C.I. Reactive Red 198 intermediate; 2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, potassium sodium salt; Azo dye intermediate for reactive red; 4-Hydroxy-3-[(4-((2-sulphooxyethyl)sulphonyl)phenyl)azo]naphthalene-2,7-disulphonic acid potassium sodium salt; Sulphonated azo dye intermediate
EINECS	Contact for details

Quality Control

Our production of 4-Hydroxy-3-[[4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2,7-Disulphonic Acid, Potassium Sodium Salt adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) detailing batch-specific results are provided and available upon request.

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 quality and handling.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Water Content (KF)	Max. 5.0%
pH (1% Solution)	6.0 - 8.0
Solubility in Water	Completely soluble

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