Description

Dipotassium 3,3'-Methylenedi(Naphthalene-2-Sulphonate) is a high-purity, water-soluble salt derived from naphthalene disulfonic acid. This compound serves as a critical intermediate and functional additive in advanced chemical synthesis and material science. It is essential for manufacturers and R&D facilities in the dye, polymer, and specialty chemical industries seeking consistent performance and reliable supply.

Application

• Dye Intermediate: A key building block in the synthesis of high-value, water-soluble azo and reactive dyes.
• Polymer Industry: Acts as a functional monomer or cross-linking agent for producing ion-exchange resins and specialty polymers.
• Electroplating Additive: Used as a brightening agent or complexing agent in electroplating baths for metal finishing.
• Concrete Admixture: Functions as a superplasticizer or dispersant component to improve the workability and strength of concrete.
• Textile Auxiliary: Employed as a leveling or dispersing agent in textile dyeing and printing processes.
• Research & Development: Serves as a standard or reagent in analytical chemistry and material science research.

Basic Information

Product Name	Dipotassium 3,3'-Methylenedi(Naphthalene-2-Sulphonate)
CAS No.	71720-60-0
Molecular Formula	C₂₁H₁₂K₂O₆S₂
Molecular Weight	502.65 g/mol
Synonyms	Dipotassium 3,3'-methylenebis(2-naphthalenesulfonate); 3,3'-Methylenedi(naphthalene-2-sulphonic acid) dipotassium salt; Dipotassium methylenebis(naphthalenesulfonate); Methylene dinaphthalene disulfonate dipotassium salt; K-NDS; Bis(2-naphthalenesulfonic acid), 3,3'-methylenedi-, dipotassium salt; 2-Naphthalenesulfonic acid, 3,3'-methylenebis-, dipotassium salt
EINECS	Contact for details

Quality Control

Our Dipotassium 3,3'-Methylenedi(Naphthalene-2-Sulphonate) is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) are provided with every shipment and are 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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality and performance.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
pH (5% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	≤ 20 ppm

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