Disodium methylenebisnaphthalenesulfonate

Disodium methylenebisnaphthalenesulfonate (CAS 26545-58-4), also known as sodium methylenebis(naphthalenesulfonate), is an anionic dispersant for industrial formulations that stabilise suspensions.

Where is Disodium methylenebisnaphthalenesulfonate used?

• Textile dyeing and finishing: disperses dye particles evenly across fibre substrates, preventing agglomeration and uneven coloration
• Concrete admixtures: plasticizer component improving workability and reducing water demand in cement slurries without compromising set strength
• Agricultural formulations: in suspension concentrates and wettable powder pesticides, it stabilises dispersion of active ingredients during dilution and field application
• Pulp and paper: improves distribution of sizing agents and pigments across fibre matrices for consistent sheet formation and coating quality
• It acts as a dispersing and wetting agent where uniform distribution of solids is critical.

Good to know: Buyers should confirm active content, sodium sulfate levels, and compatibility with specific formulation pH ranges.

Commercial specifications

• Active content typically 85–95% for powder grades