Perfluorobutane sulfonamide

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Perfluorobutane sulfonamide
Preferred IUPAC name
Other names
Perfluorobutylsulfonamide, FBSA
3D model (JSmol)
ECHA InfoCard 100.250.644 Edit this at Wikidata
  • InChI=1S/C4H2F9NO2S/c5-1(6,3(9,10)11)2(7,8)4(12,13)17(14,15)16/h(H2,14,15,16)
  • C(C(C(F)(F)S(=O)(=O)N)(F)F)(C(F)(F)F)(F)F
Molar mass 299.111 g/mol
GHS labelling:
GHS07: Exclamation mark
H302, H312, H315, H319, H332, H335
P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Perfluorobutane sulfonamide, also known as FBSA or H-FBSA, is a perfluorinated surfactant. FBSA and its N-alkylated derivatives have been patented by 3M for use in acid etch solutions with low surface tension. According to the inventors, FBSA and its derivatives are expected to have a smaller tendency to accumulate in living organisms than their perfluorooctanyl analogs such as PFOS.[1] Nevertheless, a 2015 study found FBSA in 32 out of 33 samples of Canadian fish.[2]


In April 2019, 3M admitted in a letter to the EPA that the plant in Decatur, Alabama released FBSA and FBSEE into the Tennessee River, despite a 2009 EPA order prohibiting release to water.[3] Supposedly, authorities had been aware of the contamination since 2014, but did not make it public.[4] The same facility has been responsible for release of other per- and polyfluorinated alkylated substances, namely PFOS and PFOA, into the Tennessee River, prompting 3M to pay $35 million to a local water authority in order to improve drinking water purification.[5]

Belgian journalists from VTM Nieuws/Het Laatste Nieuws reported that 3M was illegally discharging the harmful chemical FBSA into the Scheldt river. This was being investigated by the Flemish authorities. On August 24, 2021, the company confessed to the allegations.[6]

See also[edit]


  1. ^ US 7169323, MJ Parent, PM Savu, RM Flynn, "Fluorinated surfactants for buffered acid etch solutions", published 2007-01-30, assigned to 3M Innovative Properties Company 
  2. ^ Sinclair, Ewan; Mayack, David T.; Roblee, Kenneth; Yamashita, Nobuyoshi; Kannan, Kurunthachalam (2006). "Occurrence of Perfluoroalkyl Surfactants in Water, Fish, and Birds from New York State". Archives of Environmental Contamination and Toxicology. 50 (3): 398–410. doi:10.1007/s00244-005-1188-z. PMID 16435086. S2CID 709700.
  3. ^ Cheryl Hogue (2019-06-25). "3M admits to unlawful release of PFAS in Alabama". Chemical & Engineering News. 97 (26).{{cite journal}}: CS1 maint: uses authors parameter (link)
  4. ^ Chelsea Brentzel (2019-06-19). "State of Alabama permitted 3M to release toxic chemicals into Tennessee River for years, records show". WHNT News ( Retrieved 2019-07-03.
  5. ^ "3M Admits to Illegal Chemical Release". Water & Wastes Digest ( Scranton Gillette Communications. 2019-06-17. Retrieved 2019-07-03.
  6. ^ "3M bekent lozing FBSA: "Maar alles volledig in overeenstemming met omgevingsvergunning"". Het Laatste Nieuws (in Dutch). Retrieved 2021-08-24.