Description

8,8'-Methylenebis(2-Naphthalenesulfonic Acid Sodium) Salt is a high-purity, water-soluble organic salt derived from naphthalene disulfonic acid. This compound serves as a critical intermediate and functional additive, valued for its ability to modify surface properties and act as a dispersant or complexing agent. It is essential for manufacturers in the dye, pigment, and specialty chemical industries seeking to enhance product performance and process stability.

Application

• Dye and Pigment Intermediate: A key building block in the synthesis of acid dyes, reactive dyes, and organic pigments, contributing to color strength and stability.
• Dispersing Agent: Used to stabilize and prevent the agglomeration of solid particles in aqueous suspensions for coatings, inks, and ceramics.
• Electroplating Additive: Functions as a brightener or leveling agent in electroplating baths to improve the quality and uniformity of metal deposits.
• Concrete Admixture: Acts as a plasticizer or water-reducing agent to improve the workability and strength of concrete formulations.
• Textile Auxiliary: Employed in textile processing as a wetting agent, dyeing assistant, or anti-precipitant to ensure even color application.
• Pharmaceutical Intermediate: Serves as a starting material or sulfonating agent in the synthesis of certain active pharmaceutical ingredients (APIs).
• Research & Development: Used in chemical research as a model compound or reagent for studying sulfonation reactions and surfactant properties.

Basic Information

Product Name	8,8'-Methylenebis(2-Naphthalenesulfonic Acid Sodium) Salt
CAS No.	54175-61-0
Molecular Formula	C21H14Na2O6S2
Molecular Weight	472.43 g/mol
Synonyms	Dinaphthylmethanedisulfonic Acid Disodium Salt; Sodium 8,8'-Methylenebis(2-naphthalenesulfonate); Bis(2-naphthalenesulfonic acid), 8,8'-methylenedi-, disodium salt; Disodium 8,8'-methylenebis(2-naphthalenesulfonate); 2-Naphthalenesulfonic acid, 8,8'-methylenebis-, disodium salt; MBNDS; Methylene Dinaphthalene Disulfonate
EINECS	Contact for details

Quality Control

Our 8,8'-Methylenebis(2-Naphthalenesulfonic Acid Sodium) Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with every shipment to guarantee traceability and compliance with your quality requirements.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfate Ash	28.0 - 32.0%
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	6.0 - 8.0
Solubility (in Water)	Clear, complete solution

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