Magnesium citrate (3:2)

Magnesium citrate (3:2) (3 magnesium atoms per 2 citrate molecules), also called trimagnesium dicitrate, trimagnesium citrate, or the ambiguous name magnesium citrate. The substance may come as anhydrous or hydrated salt with varying properties.

Magnesium citrate (3:2)

Names
Preferred IUPAC name Trimagnesium bis(2-hydroxypropane-1,2,3-tricarboxylate)
Identifiers
CAS Number	3344-18-1 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:131389 Y
ChemSpider	2925651
ECHA InfoCard	100.020.086
EC Number	222-093-9
KEGG	D03265
PubChem CID	3693607
UNII	RHO26O1T9V Y
CompTox Dashboard (EPA)	DTXSID601015151
InChI InChI=1S/2C6H8O7.3Mg/c2*7-3(8)1-6(13,5(11)12)2-4(9)10;;;/h2*13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;/q;;3*+2/p-6 Key: PLSARIKBYIPYPF-UHFFFAOYSA-H InChI=1/2C6H8O7.3Mg/c2*7-3(8)1-6(13,5(11)12)2-4(9)10;;;/h2*13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;/q;;3*+2/p-6 Key: PLSARIKBYIPYPF-CYFPFDDLAW
SMILES C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O.C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O.[Mg].[Mg].[Mg]
Properties
Chemical formula	C12H10Mg3O14
Molar mass	451.113 g·mol−1
Appearance	White powder
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

The anhydrous salt has good solubility in water (~10% or more at 25 °C) and contains 16.2% elemental magnesium by weight. Its taste is slightly bitter-alkaline.

The hydrated salt may have 3 to 14 molecules of water attached to it and has much lower solubility in water (2% or less at 25 °C).^[1] This form doesn't have any noticeable taste.

Commercially available are the anhydrous salt, as well as nonahydrate (with 9 molecules of water attached) and 14-hydrate.^[2] The nonahydrate form contains 12% elemental magnesium by weight.