PPS-OH also called 1-(2-Hydroxy-3-sulfopropyl)-pyridinium betane,the Cas No.is 3918-73-8.And the molecular formular is C₈H₁₁NO₄S. It is yellowish transparent liquid(40%/45%) or yellowish transparent crystalline(78%).
Uses:
1.POP-OH is an excellent intermediate of nickel brightening agent, a high leveling agent for electroplating nickel; it has the same leveling property as PPS, and has good leveling performance in the middle and low areas.
2.PPS-OH also has excellent positioning ability in low current density area, and needs to be used in conjunction with BEO, PME, PESS or MOSS, saccharin and auxiliary brighteners.
3.In the brightener formula used in Watt's bright nickel plating, it is a highly efficient bright additive, which makes the coating uniform. Usually it is used in combination with saccharin, acetylenes, and wetting agents. The nickel-plated layer obtained in this way is bright and smooth, and has good ductility.

Chemical name:PPS-OH
Other name: 1-(2-Hydroxy-3-sulfopropyl)-pyridinium betane
Molecular formula:C₈H₁₁NO₄S
Molecular weight:217.24
CAS NO.:3918-73-8
Appearance: Yellowish transparent liquid(40%/45%) or yellowish transparent crystalline(78%)
Assay:40% 45% 78%
Package:25kg/drum