Chemical name: Potassium perfluorobutanesulfonate
Synonym: Potassium nonafluorobutanesulfonate
Molecular formula: C₄F₉SO₃K
Molecular weight: ~338 g/mol
Appearance: White to off-white crystalline powder
Solubility: Highly soluble in water; soluble in polar solvents
Key Properties
Anionic fluorosurfactant with excellent chemical and thermal stability
Lower bioaccumulation potential compared with long-chain PFOS
Strong surface activity and wetting performance
Applications
Electroplating & metal finishing (wetting agent, mist suppressant)
Electronics & semiconductor processing
Surfactant in specialty chemical formulations
Intermediate for fluorinated materials and surface treatments