Sodium propynesulfonate

Sodium propynesulfonate (CAS 55947-46-1), also known as sodium 2-propyne-1-sulphonate, is a specialty sulfonate salt used primarily as a functional additive in electroplating and electrodeposition processes.

Where is Sodium propynesulfonate used?

• Electronics and metal finishing: brightening and leveling agent in copper electroplating baths, improving deposit uniformity across complex geometries
• Plating electrolytes: control of grain structure and surface smoothness in printed circuit board manufacturing
• Polymer chemistry: building block for sulfonate-functionalized polymers and surface-modification coatings
• Mining and metals processing: functional additive where controlled surface interaction during metal recovery or treatment is required
• Its terminal alkyne group enables surface-active and polymerization-relevant behavior that standard sulfonates cannot provide.

Commercial specifications

• Purity specifications typically ranging from 97% to 99%+
• Packaging options generally include small quantities for laboratory or formulation development through to bulk quantities for industrial electroplating operations and large-scale manufacturing