Calcium sorbate

Calcium sorbate

Names
Preferred IUPAC name Calcium di[(2E,4E)-hexa-2,4-dienoate]
Identifiers
CAS Number	7492-55-9 Y
3D model (JSmol)	Interactive image
ChemSpider	4938651
ECHA InfoCard	100.028.474
E number	E203 (preservatives)
PubChem CID	6433506
UNII	2P47R6817F Y
CompTox Dashboard (EPA)	DTXSID2052491
InChI InChI=1/2C6H8O2.Ca/c2*1-2-3-4-5-6(7)8;/h2*2-5H,1H3,(H,7,8);/q;;+2/p-2/b2*3-2+,5-4+; Key: MCFVRESNTICQSJ-AXDCTYHGBC
SMILES [Ca+2].O=C([O-])\C=C\C=C\C.[O-]C(=O)\C=C\C=C\C
Properties
Chemical formula	C12H14CaO4
Molar mass	262.318 g·mol−1
Solubility in water	Very slightly soluble
Solubility in other solvents	Very slightly soluble in organic solvents, fats, and oils
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Calcium sorbate is the calcium salt of sorbic acid. Calcium sorbate is a polyunsaturated fatty acid salt.

It is a commonly used food preservative; its E number is E203, but it is no longer allowed to be used in the European Union.¹