Sodium Benzoate BP
Abstract
Sodium benzoate is the sodium salt of benzoic acid and exists in this form when dissolved in water.
Use/Application
Sodium benzoate is a preservative, with the E number E211. It is most widely used in acidic foods such as salad dressings (i.e. acetic acid in vinegar), carbonated drinks jams and fruit juices, pickles, condiments and frogurt toppings. It is also used as a preservative in medicines and cosmetics.
Identity
Chemical Name: Sodium Benzoate
Synonym: Benzoic acid, sodium salt
Molecular Formula: C7H5NaO2
Molecular Weight: 144.1 g/mol
CAS No.: 532-32-1
General Specifications
| Test | Specification |
| Characters | It occurs as a white or almost white, crystalline or granular powder or flakes, slightly hygroscopic |
| Identification
Test (A) Test (B) |
(a)It gives the reaction of benzoates (b)It gives the reaction of sodium |
| Solubility | Freely soluble in water, sparingly soluble in ethanol (90% V/V) |
| Appearance of solution | The solution is clear and not more intensely colored than the reference solution Y6 |
| Acidity or alkalinity | Specified test |
| Halogenated compounds-
Ionised Chlorine Total Chlorine |
Not more than 200 ppm Not more than 300 ppm |
| Heavy metals | Not more than 10 ppm |
| Loss on drying | Not more than 2.0% |
| Assay | Not less than 99.0% and not more than 100.5% (dried substances) |
Shelf life, Storage and Packing
It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.
Other
GLP, cGMP (FDA) Approved, ISO 9001, ISO 14001, ISO 45001, ISO 17025, ISO 22000, FSSC 22000, FSSAI, Halal and Kosher certified.
We observe WHO Good manufacturing practice and Good laboratory practice.
