Description

Disodium 2,2'-Methylenebisnaphthalenesulphonate is a high-purity, water-soluble organic salt derived from naphthalene disulfonic acid. This compound serves as a critical functional additive and intermediate, valued for its dispersing, solubilizing, and complexing properties in demanding industrial formulations. It is essential for manufacturers in sectors requiring precise control over particle suspension and chemical reactivity, such as advanced construction materials, textile processing, and specialty chemical synthesis.

Application

• Concrete Superplasticizer and Dispersant: A key component in high-performance concrete admixtures to reduce water content and improve workability and strength.
• Textile Auxiliary Agent: Used as a leveling and dispersing agent in dyeing processes to ensure uniform color uptake and fastness.
• Pigment and Dye Dispersant: Enhances the stability and dispersion of pigments and dyes in aqueous formulations for paints, inks, and coatings.
• Oilfield Chemical Additive: Functions as a fluid loss reducer and dispersant in drilling mud formulations.
• Industrial Cleaning Formulations: Acts as a surfactant and chelating agent in alkaline cleaning solutions for metal surfaces.
• Paper Manufacturing: Used as a retention aid and dispersant to improve paper quality and production efficiency.
• Ceramic Production: Aids in the dispersion of ceramic powders in slurries for uniform shaping and sintering.
• Chemical Synthesis Intermediate: Serves as a building block for the synthesis of more complex sulfonated compounds and optical brighteners.

Basic Information

Product Name	Disodium 2,2'-Methylenebisnaphthalenesulphonate
CAS No.	94481-50-2
Molecular Formula	C21H14Na2O6S2
Molecular Weight	472.43 g/mol
Synonyms	Disodium Methylenebis(2-naphthalenesulfonate); 2,2'-Methylenebis(naphthalene-6-sulfonic acid) disodium salt; Disodium 2,2'-Methylenebis(6-naphthalenesulfonate); MBNDS; MBNS; Disodium Methylenebisnaphthalenesulfonate; Disodium 2,2'-Methylenebis(6-sulfonaphthalene); Disodium 6,6'-Methylenedi-2-naphthalenesulfonate
EINECS	Contact for details

Quality Control

Our Disodium 2,2'-Methylenebisnaphthalenesulphonate is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for industrial applications. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with each shipment to guarantee consistency and traceability.

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 after opening to prevent moisture absorption, which can affect product performance.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content	≤ 2.0%
pH (1% Aqueous Solution)	7.0 - 9.0
Sulfate (as SO4)	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

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