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
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 Y
    Key: NSQPPSOSXWOZNH-UHFFFAOYSA-L Y
  • 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).
N verify (what is YN ?)
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, USA and Australia and New Zealand.

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.

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