1-(2-hydroxy-3-sulfopropyl)pyridinium betaine

1-(2-Hydroxy-3-sulfopropyl)pyridinium betaine (CAS 3918-73-8), also known as Pyridinium Hydroxy Propyl Sulphobetaine or PPS-OH, is a zwitterionic surfactant used in specialty industrial formulations.

It functions as a surface modifier and wetting agent in processes where controlled interfacial behavior is critical to product performance. In electroplating and PCB manufacturing, it acts as a leveling and brightening additive.

This chemical improves deposit uniformity across complex surface geometries in copper plating baths. Metalworking fluid formulators incorporate it to enhance emulsion stability and surface wetting on metal substrates.

This reduces friction and improves coolant performance during heavy industrial operations. In electronics manufacturing, it supports surface preparation steps where consistent wetting and low foam profiles are required.

These characteristics are essential for ensuring reliable coating adhesion on sensitive components. Its compatibility with aqueous systems also makes it suitable for specialty lubricant formulations.

It is particularly effective where emulsification of oil-water systems must remain stable under mechanical stress. The product is typically supplied as an aqueous solution with varying concentration levels.

Technical grade is the standard offering for industrial and electrochemical applications. Packaging options generally range from drums to intermediate bulk containers suited to industrial procurement volumes.