Calcium benzoate

Calcium benzoate

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Names
IUPAC name Calcium dibenzoate
Other names E213 Benzoic acid, calcium salt
Identifiers
CAS Number	2090-05-3 Y
ChemSpider	56210 Y
EC Number	218-235-4
Jmol 3D model	Interactive image
PubChem	62425
InChI 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
SMILES [Ca+2].[O-]C(=O)c1ccccc1.[O-]C(=O)c1ccccc1
Properties
Chemical 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)
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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.

See also

• E Numbers