Calcium benzoate
Synonym(s):Monocalcium benzoate trihydrate
- CAS NO.：2090-05-3
- Empirical Formula: C7H8CaO2
- Molecular Weight: 164.22
- MDL number: MFCD00050767
- EINECS: 218-235-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-06-24 18:39:39
What is Calcium benzoate ?
Description
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.
Chemical properties
White or colorless orthorhombic crystals or a white powder. It has slight solubility in water and high solubility in hot water. The compound is highly stable at room temperature.
The Uses of Calcium benzoate
Calcium benzoate hydrate is used in used in the food industry as a preservative.
Preparation
Calcium benzoate is prepared by reacting benzoic acid and calcium bicarbonate.
Flammability and Explosibility
Not classified
Purification Methods
Calcium benzoate (3H2O) [2090-05-3] M 336.4. Recrystallise it from water (10m/g) between 90o and 0o. [Beilstein 9 I 60, 9 H 85, 9 III 377, 9 IV 280.]
Properties of Calcium benzoate
| Boiling point: | 249.2℃[at 101 325 Pa] |
| Density | 1.42[at 20℃] |
| vapor pressure | 0.093Pa at 25℃ |
| Water Solubility | Soluble in water (2.6 g/100ml at 0°C). |
| CAS DataBase Reference | 2090-05-3(CAS DataBase Reference) |
| EPA Substance Registry System | Calcium benzoate (2090-05-3) |
Safety information for Calcium benzoate
Computed Descriptors for Calcium benzoate
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