Monosodium citrate
Names | |
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Other names
sodium dihydrogen 2-hydroxypropane-1,2,3-tricarboxylate | |
Identifiers | |
3D model (JSmol) |
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ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.038.834 |
EC Number | 242-734-6 |
PubChem CID |
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RTECS number | GE9750000 |
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Properties | |
C6H7NaO7 | |
Molar mass | 214.10 g·mol−1 |
Appearance | white powder hygroscopic |
Odor | odorless |
Melting point | 212 °C (414 °F; 485 K) |
soluble | |
Solubility | negligible in ethanol |
Acidity (pKa) | 3.50 - 3.80 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Infobox references | |
Monosodium citrate, more correctly, sodium dihydrogen citrate (Latin: natrium citricum acidulatum), is an acid salt of citric acid. Disodium citrate and trisodium citrate are also known. It can be prepared by partial neutralisation of an aqueous solution of sodium bicarbonate or carbonate with citric acid.
- NaHCO3 + C6H8O7 → NaC6H7O7 + CO2 + H2O
It is highly soluble in water and practically insoluble in ethanol. Monosodium citrate is used as an anticoagulant in donated blood.[1]
References
- ↑ Clinical Hematology: Theory and Procedures, Mary Louise Turgeon
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