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	{{#if:[Ca+2].[O-]C(=O)c1ccccc1.[O-]C(=O)c1ccccc1|Image 1
SMILES [Ca+2].[O-]C(=O)c1ccccc1.[O-]C(=O)c1ccccc1
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
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)
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 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]

References

See also

• E Numbers