Polyphenylene sulfide demonstrates remarkable thermal and chemical resilience, alongside superior mechanical properties. Nevertheless, its relatively low molecular weight renders it susceptible to disproportionation and cross-linking phenomena.
Acting as a precursor for brightener synthesis, PPS functions as a highly effective secondary brightener and leveling agent. Thanks to its exceptional purity, it avoids introducing detrimental impurities or foreign salts into the electroplating bath, offering an extended operating lifespan without inducing stress cracking. It is commonly formulated alongside saccharin, specific acetylene derivatives, and wetting agents. This synergistic combination yields a remarkably bright, uniform, and ductile nickel electrodeposit, and it remains well-suited for deployment in non-circulating electrolyte systems.

| 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℃ |

