Magnesium citrate
CAS 7779-25-1
EC 231-923-9
Formula C6H8O7.xMg
MW 451.11 g/mol
Salts & Minerals Food & NutritionPharmaceuticals & HealthcarePersonal Care & Cosmetics Chelation & SequestrationpH Regulation & Buffering
Description
Magnesium citrate (CAS 7779-25-1) is the magnesium salt of citric acid, also known as magnesium citrate dibasic or citric acid magnesium salt. It is an inorganic-organic hybrid salt valued for its solubility and bioavailability relative to other magnesium salts.
In pharmaceutical and nutraceutical formulations, magnesium citrate serves as a bioavailable magnesium source in mineral supplements, where the citrate anion enhances intestinal absorption compared to oxide or carbonate forms. In food and beverage applications, it functions as a pH buffer and sequestrant, stabilising acidity and chelating trace metal ions that would otherwise accelerate oxidation or discolouration.
Magnesium citrate is available in food-grade and pharmaceutical-grade forms meeting FCC and Ph.Eur. specifications. It is subject to REACH registration requirements for EU supply. Procurement teams should confirm grade suitability against intended application, as purity thresholds and residual limits differ between food and pharmaceutical standards.
In pharmaceutical and nutraceutical formulations, magnesium citrate serves as a bioavailable magnesium source in mineral supplements, where the citrate anion enhances intestinal absorption compared to oxide or carbonate forms. In food and beverage applications, it functions as a pH buffer and sequestrant, stabilising acidity and chelating trace metal ions that would otherwise accelerate oxidation or discolouration.
Magnesium citrate is available in food-grade and pharmaceutical-grade forms meeting FCC and Ph.Eur. specifications. It is subject to REACH registration requirements for EU supply. Procurement teams should confirm grade suitability against intended application, as purity thresholds and residual limits differ between food and pharmaceutical standards.
Physical Properties
| Water Solubility | 20g/100mL H2O (20°C) [CRC10] |
Other Names
Trimagnesium Bis(2-Hydroxypropane-1,2,3-Tricarboxylate)MAGNESIUM CITRATE DIBASICCitric acid magnesium saltCitric acid, magnesium saltMAGNESIUM CITRATE, FCC/NF (10.5-13.5 AS MAGNESIUM)2,3-propanetricarboxylicacid,2-hydroxy-magnesiumsalt1,2,3-Propanetricarboxylicacid,2-hydroxy-,magnesiumsalt1,2,3-Propanetricarboxylic acid, 2-hydroxy-, magnesium salt
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