Description

Methylenebisnaphthalene-2-Sulphonic Acid is a specialized aromatic sulfonic acid derivative, valued for its role as a key intermediate and functional additive in advanced chemical synthesis. Its molecular structure provides unique properties for modifying solubility, dispersibility, and reactivity in complex formulations. This compound is essential for manufacturers in the dye, polymer, and specialty chemical industries seeking to enhance product performance and process efficiency.

Application

• Dye and Pigment Intermediate: A crucial building block for synthesizing acid dyes, reactive dyes, and optical brighteners, contributing to color strength and fastness.
• Polymer Industry: Acts as a monomer or cross-linking agent in the production of specialty resins, polyelectrolytes, and ion-exchange materials.
• Surfactant and Dispersant Synthesis: Used to manufacture high-performance surfactants and dispersing agents for coatings, textiles, and agrochemical formulations.
• Pharmaceutical Intermediates: Serves as a synthetic precursor in the development of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Electroplating Additives: Functions as a brightener or leveling agent in electroplating baths to improve metal deposit quality.
• Research & Development: Employed in academic and industrial R&D for exploring new organic reactions and functional materials.

Basic Information

Item	Details
Product Name	Methylenebisnaphthalene-2-Sulphonic Acid
CAS No.	31154-87-7
Molecular Formula	C21H14O6S2
Molecular Weight	426.46 g/mol
Synonyms	4,4'-Methylenebis(2-naphthalenesulfonic acid); Bis(2-naphthalenesulfonic acid)methane; 2-Naphthalenesulfonic acid, 4,4'-methylenebis-; Methylenebis(2-naphthalenesulfonic acid); Dinaphthylmethanedisulfonic Acid; MBNSA; MBNSA; 4,4'-Methylenedi-2-naphthalenesulfonic acid
EINECS	Contact for details

Quality Control

Our Methylenebisnaphthalene-2-Sulphonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure consistency and meets high-purity standards suitable for industrial and fine chemical applications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your specifications.

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 product 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	Off-white to light yellow powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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