Chemistry:6:2-Fluorotelomersulfonic acid

6:2-Fluorotelomersulfonic acid

Names
Other names 6:2 Fluorotelomer Sulfonate
Identifiers
CAS Number	27619-97-2 Y
3D model (JSmol)	Interactive image
ChemSpider	106865
EC Number	248-580-6
PubChem CID	119688
UNII	9E5JL7S7WY
InChI InChI=1S/C15H18F13NO5S2/c1-9(2,7-36(32,33)34)29-8(30)3-5-35(31)6-4-10(16,17)11(18,19)12(20,21)13(22,23)14(24,25)15(26,27)28/h3-7H2,1-2H3,(H,29,30)(H,32,33,34) Key: VIONGDJUYAYOPU-UHFFFAOYSA-N
SMILES CC(C)(CS(=O)(=O)O)NC(=O)CCS(=O)CCC(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F
Properties
Chemical formula	C8H5F13O3S
Molar mass	428.16 g·mol−1
Appearance	White to light brown solid
Density	1.953 g/cm³ (at 20 °C)
Melting point	87 °C (189 °F; 360 K)
Solubility in water	58 g/l in water (20 °C)
Acidity (pKa)	1.31
Hazards
GHS pictograms
GHS Signal word	Danger
GHS hazard statements	H302, H314, H373
GHS precautionary statements	P260, P264, P264+265Category:GHS errors, P270, P280, P301+317Category:GHS errors, P301+330+331, P302+361+354Category:GHS errors, P304+340, P305+354+338Category:GHS errors, P316Category:GHS errors, P317Category:GHS errors, P319Category:GHS errors, P321, P330, P363, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Tracking categories (test):

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6:2-fluorotelomersulfonic acid (6:2-FTS) is a chemical compound that belongs to the group of fluorotelomersulfonic acids within the broader class of per- and polyfluorinated alkyl compounds (PFAS). Due to its structural similarity to perfluorooctanesulfonic acid (PFOS), it is also called H 4 PFOS .

Production

6:2-Fluorotelomersulfonic acid is produced via telomerization. In addition, it is also formed, for example, from some perfluorocarboxybetaines after their splitting.

Usage

6:2-Fluorotelomersulfonic acid and its derivatives are used as a replacement product for perfluorooctanesulfonic acid (PFOS) or its salts in fire-fighting foams.