Description

2-Naphthalenesulfonic Acid, 6,6-Methylenebis- is a specialized organic chemical building block belonging to the class of naphthalene sulfonate derivatives. Its molecular structure, featuring a methylene bridge between two naphthalenesulfonic acid units, makes it a valuable intermediate for synthesizing dyes, optical brighteners, and other functional materials. This compound is primarily sought by manufacturers in the chemical synthesis, specialty dyes, and polymer industries for its role in creating high-performance products.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of specific azo and reactive dyes, contributing to color fastness and hue.
• Optical Brightener Production: Used in the manufacture of stilbene-based optical brightening agents (OBAs) for paper, textiles, and detergents.
• Polymer Additive: Can act as a dispersant or emulsifying agent in polymerization processes and polymer formulations.
• Chemical Synthesis: Serves as a versatile building block for creating more complex sulfonated aromatic compounds in pharmaceutical and agrochemical research.
• Concrete Admixture Component: Potential use in the formulation of superplasticizers and water-reducing agents for construction materials.
• Research & Development: Utilized in academic and industrial R&D for exploring new materials with specific sulfonic acid functionalities.

Basic Information

Product Name	2-Naphthalenesulfonic Acid, 6,6-Methylenebis-
CAS No.	17766-32-4
Molecular Formula	C21H16O6S2
Molecular Weight	428.48 g/mol
Synonyms	6,6'-Methylenebis(2-naphthalenesulfonic acid); Bis(6-sulfo-2-naphthyl)methane; Dinaphthylmethanedisulfonic Acid; 2-Naphthalenesulfonic acid, 6,6'-methylenebis-; 6,6'-Methylenedi(2-naphthalenesulfonic acid); NSC 403104; Methanediylbis(6-naphthalene-2-sulfonic acid)
EINECS	Contact for details

Quality Control

Our 2-Naphthalenesulfonic Acid, 6,6-Methylenebis- is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specific results are provided and available upon request to support your quality assurance protocols.

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). Keep away from strong bases and oxidizing agents. The product may be hygroscopic (moisture-sensitive); ensure containers are sealed after use to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
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.