It is used as a relatively strong sequestrant. It is used to prevent platelet clumping in blood samples, thus used as an anticoagulant in donated blood.
| Technical Details | |
| CAS No | 18996-35-5 |
| Mol. Formul | C6H7NaO7 |
| Mol. Weigh | 214.11 |
| Category | Buffering agent, Sequestrant |
| Specification | |
| Description | White, granular crystals or a white, crystalline powder |
| Solubility | Free soluble in water; practically insoluble in ethanol (95%) |
| Appearance of Solution | 10 % w/v solution is clear and colourless |
| Identification | 10 % w/v solution gives reactions of citrates and sodium salts |
| pH of 10 % solution | 3.4 to 3.8 |
| Chloride | Not more than 50 PPM |
| Sulphates | Not more than 150 PPM |
| Oxalate | Not more than 300 PPM |
| Heavy metals | Not more than 10 PPM |
| Readily carbonisable substances | Should passes the test |
| Arsenic | Not more than 0.4 % |
| Loss on drying | Not more than 0.5 % w/w |
| Assay (on dry basis) | Between 99.0 and 101.0 % w/w |
Standard Packing: 25 KG Polywooven craft bag with double inner polyethylene bag.