Magnesium oxalate

Magnesium oxalate
Names
IUPAC name
magnesium oxalate
Systematic IUPAC name
magnesium oxalate
Other names
  • magnesium ethanedioate
  • ethanedioic acid, magnesium salt (1:1)
  • (Dihydrate)
  • magnesium oxalate-2-hydrate
  • magnesium oxalate dihydrate
  • oxalic acid magnesium salt dihydrate
[1]
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.008.121 Edit this at Wikidata
EC Number
UNII
UN number 2811 [4]
  • InChI=
    • 1S/C2H2O4.Mg/c3-1(4)2(5)6;/h(H,3,4)(H,5,6);/q;+2/p-2
    • 1S/C2H2O4.Mg.2H2O/c3-1(4)2(5)6;;;/h(H,3,4)(H,5,6);;2*1H2/q;+2;;/p-2 (Dihydrate)
    [5][6]
  • C(=O)(C(=O)[O-])[O-].[Mg+2]
Properties
  • MgC2O4
  • MgC2O4•2H2O (Dihydrate)
Molar mass
  • 112.324 g/mol
  • 148.354 g/mol (Dihydrate)
[2]
Appearance white solid [2]
Density 2.45 g/cm3[5]
Melting point between 420 and 620 °C (788 and 1,148 °F; 693 and 893 K)
150 °C (302 °F; 423 K) (dihydrate) both decompose[8]
0.038g/100g H2O (anhydrous and dihydrate)[2]
8.5 × 10−5 for MgC
2O
4[7]
Solubility insoluble in organics
Vapor pressure 2.51×10−6 mmHg[3]
Thermochemistry
-1269.0 kJ mol−1[2]
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Irritant
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
0
0
Flash point Not Applicable
Not Applicable
Related compounds
Related compounds
 Magnesium Oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Magnesium oxalate is an organic compound comprising a magnesium cation with a 2+ charge bonded to an oxalate anion. It has the chemical formula MgC2O4. Magnesium oxalate is a white solid that comes in two forms: an anhydrous form and a dihydrate form where two water molecules are complexed with the structure. Both forms are practically insoluble in water and are insoluble in organic solutions.

  1. ^ a b c "Oxalates-Compound Summary". Retrieved 16 November 2012.
  2. ^ a b c d e f g CRC Handbook of Chemistry and Physics (93 ed.). 2012–2013.
  3. ^ a b "Magnesium Oxalate Chemical Formula, Chemical CAS 547-66-0". Retrieved 16 November 2012.
  4. ^ Cite error: The named reference Source7 was invoked but never defined (see the help page).
  5. ^ a b "Magnesium Oxalate". Retrieved 16 November 2012.
  6. ^ "Magnesium Oxalate". Retrieved 16 November 2012.
  7. ^ Euler. "Ksp Table: Solubility product constants near 25 °C". chm.uri.edu. Retrieved 10 June 2021.
  8. ^ Gadala, Ahmed (1984). "Kinetics of the Decomposition of Hydrated Oxalates of Calcium and Magnesium in Air". Thermochimica Acta. 74 (1–3): 255–272. doi:10.1016/0040-6031(84)80027-1.