Disodium methylenebisnaphthalenesulfonate
[CAS# 26545-58-4]

Identification

• Classification: Surfactant >> Anionic surfactant >> Sulfonate type
• Name: Disodium methylenebisnaphthalenesulfonate
• Synonyms: Sodium methylenebis(naphthalenesulfonate)
• Molecular Formula: C₂₁H₁₄O₆S₂.₂Na
• Molecular Weight: 472.44
• CAS Registry Number: 26545-58-4
• EC Number: 247-785-8
• SMILES: C1=CC=C2C(=C1)C=CC=C2S(=O)(=O)OCOS(=O)(=O)C3=CC=CC4=CC=CC=C43.[Na].[Na]

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Eye irritation	Eye Irrit.	2B	H320
Skin mild irritation	Skin Mild Irrit. 99	3	H316
Eye irritation	Eye Irrit.	2	H319

Discovery and Applications

Disodium methylenebisnaphthalenesulfonate is a synthetic compound characterized by its dual naphthalenesulfonate groups connected through a methylene bridge. This compound is a versatile surfactant and dispersing agent with applications across a variety of industrial fields, including textiles, paper production, and agrochemicals.

The discovery and synthesis of disodium methylenebisnaphthalenesulfonate stem from efforts to develop efficient dispersants for aqueous systems. The compound is synthesized by sulfonation of naphthalene followed by methylene linkage, a process optimized for high purity and solubility. Its chemical structure grants it the ability to interact with diverse substrates, making it highly effective in stabilizing suspensions and preventing particle agglomeration.

In textile applications, disodium methylenebisnaphthalenesulfonate is used as a leveling agent in dyeing processes. It ensures uniform dye uptake by fabrics, enhancing color consistency and reducing defects. This role is particularly valuable in the production of high-quality textiles where precision in coloration is critical.

The compound also plays a vital role in the paper industry, where it acts as a dispersant for clay and other fillers in papermaking. By maintaining uniform dispersion of these components, it improves the smoothness and printability of the finished paper while minimizing sedimentation during processing.

In agrochemicals, disodium methylenebisnaphthalenesulfonate serves as an adjuvant in pesticide formulations. Its surfactant properties enhance the spreadability and adhesion of pesticides on plant surfaces, improving efficacy while reducing waste. This application underscores its importance in sustainable agricultural practices.

Beyond its established industrial uses, research into disodium methylenebisnaphthalenesulfonate has highlighted its potential in novel applications, including wastewater treatment and advanced materials. Its ability to interact with a wide range of substances continues to inspire new innovations in both environmental and technological contexts.

References

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