Potassium propanoate

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Potassium propanoate
Potassium propionate.svg
Other names
Potassium propionate; E283
3D model (JSmol)
ECHA InfoCard 100.005.749
EC Number
  • 206-323-5
E number E283 (preservatives)
Molar mass 112.1689 g/mol
Appearance Colorless crystalline platelets[1]
Melting point >300 °C[1]
Solubility in ethanol soluble[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Potassium propanoate or potassium propionate has formula K(C2H5COO). Its melting point is 410 °C. It is the potassium salt of propanoic acid.


It is used as a food preservative and is represented by the food labeling E number E283 in Europe[2] and by the INS number 283 in Australia and New Zealand.[3]


  1. ^ a b c d J. I. G. Cadogan, J. Buckingham, F. MacDonald: Dictionary of Organic Compounds: First Supplement. CRC Press, 1996, ISBN 978-0-412-54110-0
  2. ^ UK Food Standards Agency: "Current EU approved additives and their E Numbers". Retrieved 2011-10-27.
  3. ^ Australia New Zealand Food Standards Code"Standard 1.2.4 - Labelling of ingredients". Retrieved 2011-10-27.