Sodium Citrate BP
Abstract:
Trisodium citrate has the chemical formula of Na3C6H5O7. It is sometimes referred to simply as “sodium citrate”, though sodium citrate can refer to any of the three sodium salts of citric acid. It possesses a saline, mildly tart flavor.
Uses/Applications:
Sodium citrate is chiefly used as a food additive, usually for flavor or as a preservative. Its E number is E331. Sodium citrate is employed as a flavoring agent in certain varieties of club soda. As a conjugate base of a weak acid, citrate can perform as a buffering agent or acidity regulator, resisting changes in pH.
Identity:
Molecular Formula: C6H5Na3O7.2H2O
Molecular Weight: 294.1 g/mol
CAS No.: 6132-04-3
Specifications:
| Test | Specification |
| Characters | White or almost white, crystalline powder or granular crystals, slightly deliquescent in moist air. |
| Identification
Test(A) Test(B) |
(a) Specified test. The solution gives the reaction of citrates. (b) 1 ml of solution gives reaction of sodium. |
| Solubility | Freely soluble in water, practically insoluble in ethanol (96%) |
| Appearance of the solution | The solution is clear and colorless. |
| Acidity or Alkalinity | Specified Test. |
| Readily Carbonisable substances | Specified Test. |
| Chlorides | Not more than 50 ppm |
| Oxalates | Not more than 300 ppm |
| Sulfates | Not more than 150 ppm |
| Water | Between 11.0% to 13.0% |
| Heavy Metals | Not more than 10 ppm |
| Assay | Not less than 99.0% and not more than 101.0% calculated on the anhydrous basis. |
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.
