FRD-903

FRD-903
Names
Preferred IUPAC name
2,3,3,3-Tetrafluoro-2-(heptafluoropropoxy)propanoic acid
Other names
Perfluoro-2-propoxypropanoic acid, hexafluoropropylene oxide dimer acid (HFPO-DA), C3 dimer acid
Identifiers
3D model (JSmol)
ECHA InfoCard 100.032.928 Edit this at Wikidata
EC Number
  • 236-236-8
  • InChI=1S/C6HF11O3/c7-2(1(18)19,4(10,11)12)20-6(16,17)3(8,9)5(13,14)15/h(H,18,19)
  • C(=O)(C(C(F)(F)F)(OC(C(C(F)(F)F)(F)F)(F)F)F)O
Properties
C6HF11O3
Molar mass 330.053 g·mol−1
Appearance Liquid <60 °C
Density 1.748 g/cm3 (at 20 °C)
Soluble, 739 g/L [1]
Acidity (pKa) 3.82
Hazards
GHS labelling:
H302, H314, H335
Hazards
GHS labelling:
GHS07: Exclamation mark GHS05: Corrosive
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g. diesel fuelInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3
2
0
Flash point 60 °C (140 °F; 333 K)
Safety data sheet (SDS) [1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

FRD-903 (also known as hexafluoropropylene oxide dimer acid, HFPO-DA, and 2,3,3,3-tetrafluoro-2-(heptafluoropropoxy)propanoic acid) is a chemical compound that is among the class of per- and polyfluoroalkyl substances (PFASs). More specifically, this synthetic petrochemical is also described as a perfluoroalkyl ether carboxylic acid (PFECA) and a Fluorointermediate.[2] It is not biodegradable and is not hydrolyzed by water.[3][4]

  1. ^ Drinking Water Health Advisory epa.gov
  2. ^ "Gen-x/PFAS Information". Brunswick County, North Carolina. Retrieved 11 December 2021.
  3. ^ "Justification for the selection of a substance for CoRAP inclusion". Retrieved 23 July 2017.
  4. ^ Beekman, M.; et al. (2016-12-12). "Evaluation of substances used in the GenX technology by Chemours, Dordrecht". National Institute for Public Health and the Environment (RIVM, The Netherlands). Retrieved 2017-07-23.