Calcium benzoate

Calcium benzoate
IUPAC name

Calcium dibenzoate
Other names

E213
Benzoic acid, calcium salt
Identifiers
CAS number 2090-05-3 Y
PubChem 62425
ChemSpider 56210 Y
EC number 218-235-4
Jmol-3D images Image 1
Properties
Molecular formula Ca(C7H5O2)2
Molar mass 282.31 g/mol
Solubility in water 2.32 g/100 mL (0 °C)
2.72 g/100 mL (20 °C)
8.7 g/100 mL (100 °C)
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Calcium benzoate refers to the calcium salt of benzoic acid. When used in the food industry as a preservative, its E number is E213 (INS number 213); it is approved for use as a food additive in the EU,[1] USA and Australia and New Zealand.[2]

The formulas and structures of calcium carboxylate derivatives of calcium and related metals are complex. Generally the coordination number is eight and the carboxylates form Ca-O bonds. Another variable is the degree of hydration.[3]

Reference

  1. ^ UK Food Standards Agency: "Current EU approved additives and their E Numbers". http://www.food.gov.uk/safereating/chemsafe/additivesbranch/enumberlist. Retrieved 2011-10-27. 
  2. ^ Australia New Zealand Food Standards Code"Standard 1.2.4 - Labelling of ingredients". http://www.comlaw.gov.au/Details/F2011C00827. Retrieved 2011-10-27. 
  3. ^ H. Einspahr and C. E. Bugg "The geometry of calcium carboxylate interactions in crystalline complexes" Acta Cryst. (1981). B37, pages 1044-1052. doi:10.1107/S0567740881005037

See also