Calcium benzoate

Calcium benzoate
Names
Preferred IUPAC name
Calcium dibenzoate
Other names
  • E213
  • Benzoic acid, calcium salt
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.016.578 Edit this at Wikidata
EC Number
  • 218-235-4
E number E213 (preservatives)
UNII
  • InChI=1S/2C7H6O2.Ca/c2*8-7(9)6-4-2-1-3-5-6;/h2*1-5H,(H,8,9);/q;;+2/p-2 checkY
    Key: NSQPPSOSXWOZNH-UHFFFAOYSA-L checkY
  • InChI=1/2C7H6O2.Ca/c2*8-7(9)6-4-2-1-3-5-6;/h2*1-5H,(H,8,9);/q;;+2/p-2
    Key: NSQPPSOSXWOZNH-NUQVWONBAQ
  • [Ca+2].[O-]C(=O)c1ccccc1.[O-]C(=O)c1ccccc1
Properties
Ca(C7H5O2)2
Molar mass 282.31 g/mol
2.32 g/100 mL (0 °C)
2.72 g/100 mL (20 °C)
8.7 g/100 mL (100 °C)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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]

  1. ^ UK Food Standards Agency: "Current EU approved additives and their E Numbers". Retrieved 2011-10-27.
  2. ^ "Standard 1.2.4 - Labelling of ingredients". Australia New Zealand Food Standards Code. 8 September 2011. Retrieved 2011-10-27.
  3. ^ Einspahr, H.; Bugg, C. E. (1981). "The geometry of calcium carboxylate interactions in crystalline complexes". Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 37 (5): 1044–1052. Bibcode:1981AcCrB..37.1044E. doi:10.1107/S0567740881005037.