|Preferred IUPAC name
3D model (JSmol)
|E number||E281 (preservatives)|
CompTox Dashboard (EPA)
|Molar mass||96.060 g/mol|
|Odor||faint acetic-butyric odor|
|Melting point||289 °C (552 °F; 562 K)|
|Solubility in ethanol||41.7 g/L|
|S01AX10 (WHO) QA16QA02 (WHO)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
(what is ?)
It is used as a food preservative and is represented by the food labeling E number E281 in Europe; it is used primarily as a mold inhibitor in bakery products. It is approved for use as a food additive in the EU, USA and Australia and New Zealand (where it is listed by its INS number 281).
Anhydrous sodium propionate is a polymeric structure, featuring trigonal prismatic Na+ centers bonded to six oxygen ligands provided by the carboxylates. A layered structure is observed, with the hydrophobic ethyl groups projecting into the layered galleries. With hydrated sodium propionate, some of these Na-carboxylate linkages are displaced by water.
- Merck Index, 11th Edition, 8623.
- UK Food Standards Agency: "Current EU approved additives and their E Numbers". Retrieved 2011-10-27.
- US Food and Drug Administration: "Listing of Food Additives Status Part II". Food and Drug Administration. Retrieved 2011-10-27.
- Australia New Zealand Food Standards Code"Standard 1.2.4 - Labelling of ingredients". Retrieved 2011-10-27.
- Fábry, Jan; Samolová, Erika (2020). "Layered alkali propanoatesM+(C2H5COO)−;M+= Na+, K+, Rb+, Cs+". Acta Crystallographica Section E. 76 (9): 1508–1513. doi:10.1107/S2056989020011469. PMC 7472758. PMID 32939309.
- Sodium propanoate at Sci-toys.com