Acetyl fluoride

Acetyl fluoride
	Structural formula
	Space-filling model
	Ball and stick model
Names
	Preferred IUPAC name Acetyl fluoride
	Systematic IUPAC name Ethanoyl fluoride
	Other names Methylcarbonyl fluoride
Identifiers
CAS Number	557-99-3 ;
3D model (JSmol)	Interactive image ;
Abbreviations	AcF; FAc
ChEBI	CHEBI:191932 ;
ChemSpider	10731 ;
ECHA InfoCard	100.008.354
PubChem CID	11204 ;
UNII	SFP6JT54SF ;
CompTox Dashboard (EPA)	DTXSID3060326 ;
	InChI Key: JUCMRTZQCZRJDC-UHFFFAOYSA-N ; InChI=1S/C2H3FO/c1-2(3)4/h1H3;
	SMILES FC(=O)C;
Properties
Chemical formula	C2H3FO
Molar mass	62.043 g·mol−1
Appearance	Colorless gas or liquid
Density	1.032 g/cm3
Melting point	−84 °C (−119 °F; 189 K)
Boiling point	21 °C (70 °F; 294 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314
Precautionary statements	P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, 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

Last updated October 14, 2026

Acetyl fluoride is an acyl halide with the chemical formula CH₃COF.^[2] The formula is commonly abbreviated AcF. This chemical is corrosive. This chemical can be known as Acetyl fluoride, 557-99-3 or Methylcarbonyl fluoride. It carries a oxo group at position 1.^[3]

Synthesis

Acetyl fluoride is synthesized using hydrogen fluoride and acetic anhydride. Acetic acid is produced as a byproduct.^[4]

HF + (CH₃CO)₂O → CH₃CO₂H + CH₃COF

References

↑ "Acetyl fluoride". Archived from the original on 2014-03-28. Retrieved 2012-03-07.
↑ "Acetyl Fluoride". NIST. Archived from the original on 21 February 2019. Retrieved 7 March 2012.
↑ PubChem. "Acetyl fluoride". pubchem.ncbi.nlm.nih.gov. Retrieved 2023-11-14.
↑ Tanaka, Mutsuo; Fujiwara, Masahiro; Ando, Hisanori (1995). "Dual Reactivity of the Formyl Cation as an Electrophile and a Bransted Acid in Superacids". Journal of Organic Chemistry. 60 (12): 3846–3850. doi:10.1021/jo00117a041.

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[1] "Acetyl fluoride". Archived from the original on 2014-03-28. Retrieved 2012-03-07.

[2] "Acetyl Fluoride". NIST. Archived from the original on 21 February 2019. Retrieved 7 March 2012.

[3] PubChem. "Acetyl fluoride". pubchem.ncbi.nlm.nih.gov. Retrieved 2023-11-14.

[4] Tanaka, Mutsuo; Fujiwara, Masahiro; Ando, Hisanori (1995). "Dual Reactivity of the Formyl Cation as an Electrophile and a Bransted Acid in Superacids". Journal of Organic Chemistry. 60 (12): 3846–3850. doi:10.1021/jo00117a041.

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Acetyl fluoride

Contents

Synthesis

See also

References