Product Description
PPS (CAS No. 15471-17-7) is an important intermediate used in the preparation of nickel electroplating brighteners. It features excellent thermal stability, chemical resistance, and mechanical properties, making it a valuable additive in advanced plating formulations.
Due to its high purity and effective brightening performance, PPS can enhance the appearance and quality of nickel coatings without introducing undesirable impurities or excessive salts into the plating bath. It also helps improve coating leveling, surface gloss, and ductility while maintaining stable electrolyte performance.
In practical electroplating applications, PPS is commonly used together with saccharin, acetylene-based compounds, and other auxiliary additives to achieve highly bright, smooth, and uniform nickel deposits. It is suitable for both conventional and low-flow electrolyte systems, providing reliable performance for precision plating processes.

Chemical Properties
| English Name | 3-(1-Pyridinio)-1-propanesulfonate |
| English Synonyms | NDSB-201;PPS;PYRIDINIUM N-PROPYL SULFOBETAINE;3-(1-PYRIDINIO)-1-PROPANESULFONATE;3-(1-PYRI DINIO)-1-PROPANESULFONATE INNER SALT;3-(1-PYRIDINIO)PROPANESULFONATE;3-(1-PYRIDINO)-1-PRO PANE SULFONATE;1-(3-SULFOPROPYL)PYRIDINIUM BETAIN |
| CAS Number | 15471-17-7 |
| Molecular Formula | C8H11NO3S |
| Molecular Weight | 201.24 |
| EINECS Number | 239-491-3 |
| Melting point | 275-277°C |
| Density | 1.53[at 20°C] |
| Vapor pressure | OPa at 25℃ |
| Flash point | 160 °C |
| Storage conditions | Sealed in dry,Room Temperature |
| Solubility | Methanol (slightly soluble), water (slightly soluble) |
| Form | White powder |
| Color | White |
| Water solubility | 240.5g/L at 25℃ |
| BRN | 1621867 |
| InChI | InChl=1S/C8H11NO3S/c10-13(11,12)8-4-7-9-5-2-1-3-6-9/h1-3,5-6H,4,7-8H2 |
| InChIKey | REEBJQTUUTGAL-UHFFFAOYSA-N |
| SMILES | C1C=CC=C[N+]=1CCCS([O-])(=O)=0 |
| LogP | -2.78 at 21.5℃ |

