Trisodium Citrate
- Details
- parameter
Molecular Formula
Na3C6H5O7
Appearance and Properties
White, crystal powder. It possesses a saline, mildly tart flavor.
Uses
Sodium citrate is chiefly used as a food additive, usually for flavor or as a preservative. It is common as an ingredient in bratwurst, and is also used in commercial ready-to-drink beverages and drink mixes, contributing a tart flavor. As a conjugate base of a weak acid, citrate can perform as a buffering agent or acidity regulator, resisting changes in pH. It is used to control acidity in some substances, such as gelatin desserts. Sodium citrate is used to relieve discomfort in urinary-tract infections, such as cystitis, to reduce the acidosis seen in distal renal tubular acidosis, and can also be used as an osmotic laxative. It is a major component of the WHO oral rehydration solution.
| ITEM | STANDARD |
| Appearance | White, crystal powder |
| Purity of Trisodium Citrate | 99%-101% |
| Water | 11%~13% |
| PH (5% solution) | 7.5-9.0 |
| Heavy Metals(mg/kg) | 5 ppm max |
| As | 1 ppm max |
| Pb | 1 ppm max |
| Chloride | 50 ppm max |
| Sulphate | 150 ppm max |
| Hg | 1 ppm max |
| Oxalate | 100 ppm max |
| Readily carbonisable substance | Pass the test |
| Pyrogen | Pass the test |
| Tartrate | Pass the test |
| Appearance of solution | Clear and colourless |
| Acidity or Alkalinity | Pass the test |
| Iron | 5 ppm max |
| Ferromagnetical and mechanical impurities | Absent |
