Pyridinium hydroxy propyl sulfobetaine(PPSOH) CAS:3918-73-8 Trade name: PPSOH Chemical name: Pyridinium hydroxy propyl sulfobetaine Molecular formula: C8H11O4NS Assay: 40% 45% 75% Appearance: Colorless to transparent liquid PH value: 3.0-5.0 4.0-7.0 Water-solubility: Quite soluble in water Application: High leveling agent for nickel plating. Special suitable for high and middle densities