Hexafluoroacetone

Hexafluoroacetone
Names
	Preferred IUPAC name 1,1,1,3,3,3-Hexafluoropropan-2-one
	Other names perfluoroacetone; acetone hexafluoride; perfluoro-2-propanone
Identifiers
CAS Number	684-16-2 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:39429 ;
ChemSpider	13846015 ;
ECHA InfoCard	100.010.616
EC Number	211-676-3;
PubChem CID	12695;
RTECS number	UC2450000;
UNII	AKU9463N1Y;
UN number	2420
CompTox Dashboard (EPA)	DTXSID9043778 ;
	InChI InChI=1S/C3F6O/c4-2(5,6)1(10)3(7,8)9 Key: VBZWSGALLODQNC-UHFFFAOYSA-N ; InChI=1/C3F6O/c4-2(5,6)1(10)3(7,8)9 Key: VBZWSGALLODQNC-UHFFFAOYAI;
	SMILES FC(F)(F)C(=O)C(F)(F)F;
Properties
Chemical formula	C3F6O
Molar mass	166.02 g/mol
Appearance	Colorless gas
Odor	musty
Density	1.32 g/ml, liquid
Melting point	−129 °C (144 K)
Boiling point	−28 °C (245 K)
Solubility in water	Reacts with water
Vapor pressure	5.8 atm (20 °C)
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Toxic (T),; Corrosive (C)
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H310, H311, H314, H315, H330, H360, H370, H372
Precautionary statements	P201, P202, P260, P262, P264, P270, P271, P280, P281, P284, P301+P310, P301+P330+P331, P302+P350, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P307+P311, P308+P313, P310, P312, P314, P320, P321, P322, P330, P332+P313, P361, P362, P363, P403+P233, P405, P410+P403, P501
NFPA 704 (fire diamond)	3 0 2 W
Flash point	Nonflammable
	NIOSH (US health exposure limits):
PEL (Permissible)	none
REL (Recommended)	TWA 0.1 ppm (0.7 mg/m3) [skin]
IDLH (Immediate danger)	N.D.
Related compounds
Related ketones;; organofluorides	Acetone;; Hexafluoro-2-propanol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Hexafluoroacetone (HFA) is a chemical compound with the formula (CF₃)₂CO. It is structurally similar to acetone; however, its reactivity is markedly different. It is a colourless, hygroscopic, nonflammable, highly reactive gas characterized by a musty odour. According to electron diffraction, HFA and acetone adopt very similar structures, the C-O distance being only longer in the fluorinated compound (124.6 vs 121.0 pm), possibly due to steric effects.

The term "hexafluoroacetone" can refer to the sesquihydrate (1.5 H₂O), which is a hemihydrate of hexafluoropropane-2,2-diol (F
₃C)
₂C(OH)
₂, a geminal diol. Hydrated HFA behaves differently from the anhydrous material.

Names


Preferred IUPAC name 1,1,1,3,3,3-Hexafluoropropan-2-one
Other names perfluoroacetone acetone hexafluoride perfluoro-2-propanone
Identifiers
CAS Number	684-16-2^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:39429^Y
ChemSpider	13846015^Y
ECHA InfoCard	100.010.616
EC Number	211-676-3
PubChem CID	12695
RTECS number	UC2450000
UNII	AKU9463N1Y
UN number	2420
CompTox Dashboard (EPA)	DTXSID9043778
InChI InChI=1S/C3F6O/c4-2(5,6)1(10)3(7,8)9^Y Key: VBZWSGALLODQNC-UHFFFAOYSA-N^Y InChI=1/C3F6O/c4-2(5,6)1(10)3(7,8)9 Key: VBZWSGALLODQNC-UHFFFAOYAI
SMILES FC(F)(F)C(=O)C(F)(F)F
Properties
Chemical formula	C₃F₆O
Molar mass	166.02 g/mol
Appearance	Colorless gas
Odor	musty
Density	1.32 g/ml, liquid
Melting point	−129 °C (144 K)
Boiling point	−28 °C (245 K)
Solubility in water	Reacts with water
Vapor pressure	5.8 atm (20 °C)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Toxic (T), Corrosive (C)
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H310, H311, H314, H315, H330, H360, H370, H372
Precautionary statements	P201, P202, P260, P262, P264, P270, P271, P280, P281, P284, P301+P310, P301+P330+P331, P302+P350, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P307+P311, P308+P313, P310, P312, P314, P320, P321, P322, P330, P332+P313, P361, P362, P363, P403+P233, P405, P410+P403, P501
NFPA 704 (fire diamond)	3 0 2 W
Flash point	Nonflammable
NIOSH (US health exposure limits):
PEL (Permissible)	none
REL (Recommended)	TWA 0.1 ppm (0.7 mg/m³) [skin]
IDLH (Immediate danger)	N.D.
Related compounds
Related ketones; organofluorides	Acetone; Hexafluoro-2-propanol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is ^YN ?) Infobox references