Potassium perfluorobutanesulfonate/Potassium Nonafluoro-1-butanesulfonate (CAS 29420-49-3) – High Purity Flame Retardant & Antistatic Agent for Polycarbonate

CAS 29420-49-3
Potassium perfluorobutanesulfonate (PFBS potassium salt), also known as Potassium nonafluoro-1-butanesulfonate (CAS 29420-49-3), is a high-purity perfluorinated anionic surfactant. It is widely used as a highly effective flame retardant and antistatic agent in engineering plastics, particularly polycarbonate (PC). With its unique fluorinated structure, it provides excellent flame retardancy at very low addition levels (as low as 0.1 wt% in PC) while maintaining optical transparency of the resin. Available in 25 kg fiber drums with ≥99% purity.
Quantity:
Contact Now

  • 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