Acesulfame potassium

Acesulfame potassium (UK: /æsɪˈsʌlfeɪm/, US: /ˌeɪsiːˈsʌlfeɪm/ AY-see-SUL-faym or /ˌæsəˈsʌlfeɪm/), also known as acesulfame K (K is the symbol for potassium) or Ace K, is a synthetic calorie-free sugar substitute (artificial sweetener) often marketed under the trade names Sunett and Sweet One. In the European Union, it is known under the E number (additive code) E950. It was discovered accidentally in 1967 by German chemist Karl Clauss at Hoechst AG (now Nutrinova). In chemical structure, acesulfame potassium is the potassium salt of 6-methyl-1,2,3-oxathiazine-4(3H)-one 2,2-dioxide. It is a white crystalline powder with molecular formula C
4H
4KNO
4S and a molecular weight of 201.24 g/mol.

Acesulfame potassium
Names
IUPAC name
Potassium 6-methyl-2,2-dioxo-2H-1,2λ6,3-oxathiazin-4-olate
Other names
  • Acesulfame K
  • Ace K
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.054.269
EC Number
  • 259-715-3
E number E950 (glazing agents, ...)
PubChem CID
UNII
  • InChI=1S/C4H5NO4S.K/c1-3-2-4(6)5-10(7,8)9-3;/h2H,1H3,(H,5,6);/q;+1/p-1 N
    Key: WBZFUFAFFUEMEI-UHFFFAOYSA-M N
  • InChI=1/C4H5NO4S.K/c1-3-2-4(6)5-10(7,8)9-3;/h2H,1H3,(H,5,6);/q;+1/p-1
    Key: WBZFUFAFFUEMEI-REWHXWOFAT
SMILES
  • [K+].C\C1=C\C(=O)[N-]S(=O)(=O)O1
Properties
C4H4KNO4S
Molar mass 201.242
Appearance white crystalline powder
Density 1.81 g/cm3
Melting point 225 °C (437 °F; 498 K)
270 g/L at 20 °C
Hazards
NFPA 704 (fire diamond)
1
1
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references
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