Monosodium_citrate
Monosodium citrate
Chemical compound
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 citric acid[3] with an aqueous solution of sodium bicarbonate or carbonate. It has a slightly acidic taste.[3]
- NaHCO3 + C6H8O7 → NaC6H7O7 + CO2 + H2O
- Na2CO3 + 2C6H8O7 → 2NaC6H7O7 + CO2 + H2O
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It is highly soluble in water and practically insoluble in ethanol.[3] Monosodium citrate is used as an anticoagulant in donated blood.[4] It is used as an alkalinizing agent to prevent kidney stone disease.[5] The crystals form as nearly perfect cubes.[6]