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
CAS Number	13252-13-6;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:143205;
ChEMBL	ChEMBL2008338;
ChemSpider	102538;
ECHA InfoCard	100.032.928
EC Number	236-236-8;
PubChem CID	114481;
UNII	R8C5T5N5HN;
CompTox Dashboard (EPA)	DTXSID70880215 ;
	InChI Key: CSEBNABAWMZWIF-UHFFFAOYSA-N; 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);
	SMILES C(=O)(C(C(F)(F)F)(OC(C(C(F)(F)F)(F)F)(F)F)F)O;
Properties
Chemical formula	C6HF11O3
Molar mass	330.053 g·mol−1
Appearance	Liquid <60 °C
Density	1.748 g/cm3 (at 20 °C)
Solubility in water	Soluble, 739 g/L
Acidity (pKa)	3.82
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H314, H335
Precautionary statements	P260, P261, P264, P264+P265, P270, P271, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P319, P321, P330, P363, P403+P233, P405, P501
NFPA 704 (fire diamond)	3 2 0
Flash point	60 °C (140 °F; 333 K)
Safety data sheet (SDS)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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. It is not biodegradable and is not hydrolyzed by water.