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Magnesium carbonate information


Magnesium carbonate
Names
Other names
Magnesite
Barringtonite (dihydrate)
Nesequehonite (trihydrate)
Lansfordite (pentahydrate)
Identifiers
CAS Number
  • 546-93-0 (anhydrous) checkY
  • 17968-26-2 (monohydrate) checkY
  • 5145-48-2 (dihydrate) ☒N
  • 14457-83-1 (trihydrate) ☒N
  • 61042-72-6 (pentahydrate) ☒N
3D model (JSmol)
  • Interactive image
ChEBI
  • CHEBI:31793 checkY
ChEMBL
  • ChEMBL1200736 ☒N
ChemSpider
  • 10563 checkY
ECHA InfoCard 100.008.106 Edit this at Wikidata
E number E504(i) (acidity regulators, ...)
PubChem CID
  • 11029
RTECS number
  • OM2470000
UNII
  • 0IHC698356 checkY
  • 0E53J927NA (monohydrate) checkY
CompTox Dashboard (EPA)
  • DTXSID4049660 Edit this at Wikidata
InChI
  • InChI=1S/CH2O3.Mg/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 checkY
    Key: ZLNQQNXFFQJAID-UHFFFAOYSA-L checkY
  • InChI=1/CH2O3.Mg/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2
    Key: ZLNQQNXFFQJAID-NUQVWONBAU
SMILES
  • [Mg+2].[O-]C([O-])=O
Properties
Chemical formula
MgCO3
Molar mass 84.3139 g/mol (anhydrous)
Appearance Colourless crystals or white solid
Hygroscopic
Odor Odorless
Density 2.958 g/cm3 (anhydrous)
2.825 g/cm3 (dihydrate)
1.837 g/cm3 (trihydrate)
1.73 g/cm3 (pentahydrate)
Melting point 350 °C (662 °F; 623 K)
decomposes (anhydrous)
165 °C (329 °F; 438 K)
(trihydrate)
Solubility in water
Anhydrous:
0.0139 g/100 ml (25 °C)
0.0063 g/100 ml (100 °C)[1]
Solubility product (Ksp)
10−7.8[2]
Solubility Soluble in acid, aqueous CO2
Insoluble in acetone, ammonia
Magnetic susceptibility (χ)
−32.4·10−6 cm3/mol
Refractive index (nD)
1.717 (anhydrous)
1.458 (dihydrate)
1.412 (trihydrate)
Structure
Crystal structure
Trigonal
Space group
R3c, No. 167[3]
Thermochemistry
Heat capacity (C)
75.6 J/mol·K[1]
Std molar
entropy (S298)
65.7 J/mol·K[1][4]
Std enthalpy of
formation fH298)
−1113 kJ/mol[4]
Gibbs free energy fG)
−1029.3 kJ/mol[1]
Pharmacology
ATC code
A02AA01 (WHO) A06AD01 (WHO)
Hazards
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 Non-flammable
NIOSH (US health exposure limits):
PEL (Permissible)
  • TWA 15 mg/m3 (total)
  • TWA 5 mg/m3 (resp)[5]
Safety data sheet (SDS) ICSC 0969
Related compounds
Other anions
Magnesium bicarbonate
Other cations
Beryllium carbonate
Calcium carbonate
Strontium carbonate
Barium carbonate
Radium carbonate
Related compounds
Artinite
Hydromagnesite
Dypingite
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)
Infobox references

Magnesium carbonate, MgCO3 (archaic name magnesia alba), is an inorganic salt that is a colourless or white solid. Several hydrated and basic forms of magnesium carbonate also exist as minerals.

  1. ^ a b c d "Magnesium carbonate".
  2. ^ Bénézeth, Pascale; Saldi, Giuseppe D.; Dandurand, Jean-Louis; Schott, Jacques (2011). "Experimental determination of the solubility product of magnesite at 50 to 200 °C". Chemical Geology. 286 (1–2): 21–31. Bibcode:2011ChGeo.286...21B. doi:10.1016/j.chemgeo.2011.04.016.
  3. ^ Cite error: The named reference Ross was invoked but never defined (see the help page).
  4. ^ a b Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. p. A22. ISBN 978-0-618-94690-7.
  5. ^ NIOSH Pocket Guide to Chemical Hazards. "#0373". National Institute for Occupational Safety and Health (NIOSH).

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Magnesium carbonate

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Magnesium carbonate, MgCO3 (archaic name magnesia alba), is an inorganic salt that is a colourless or white solid. Several hydrated and basic forms of...

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Carbonate

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dolomite, a calcium-magnesium carbonate CaMg(CO3)2; and siderite, or iron(II) carbonate, FeCO3, an important iron ore. Sodium carbonate ("soda" or "natron")...

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Antacid

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of aluminum, calcium, magnesium, or sodium. Some preparations contain a combination of two salts, such as magnesium carbonate and aluminum hydroxide...

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Magnesium bicarbonate

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Mg(HCO3)2 Drying the resulting solution causes the magnesium bicarbonate to decompose, yielding magnesium carbonate, carbon dioxide, and water: Mg2+ + 2 HCO3−...

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Sodium carbonate

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contains calcium or magnesium ions. Sodium carbonate is used for removing these ions and replacing them with sodium ions. Sodium carbonate is a water-soluble...

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Magnesium sulfate

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travels farther in the ocean. Boric acid and magnesium carbonate also contribute to absorption. Magnesium sulfate is used both externally (as Epsom salt)...

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Hard water

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limestone, chalk or gypsum, which are largely made up of calcium and magnesium carbonates, bicarbonates and sulfates. Drinking hard water may have moderate...

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Calcium carbonate

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fully understood. Magnesium carbonate (MgCO3) has the calcite structure, whereas strontium carbonate (SrCO3) and barium carbonate (BaCO3) adopt the aragonite...

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Magnesite

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Magnesite is a mineral with the chemical formula MgCO 3 (magnesium carbonate). Iron, manganese, cobalt, and nickel may occur as admixtures, but only in...

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Magnesium oxide

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Magnesium oxide is produced by the calcination of magnesium carbonate or magnesium hydroxide. The latter is obtained by the treatment of magnesium chloride...

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Magnesium chloride

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from magnesium hydroxide using hydrochloric acid: Mg(OH)2(s) + 2 HCl(aq) → MgCl2(aq) + 2 H2O(l) It can also be prepared from magnesium carbonate by a...

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Barium carbonate

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precipitate soluble salts (calcium sulfate and magnesium sulfate) that cause efflorescence. "Barium carbonate". Archived from the original on 2014-05-06....

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Magnesium hydroxide

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used as construction aggregate for making concrete. The reaction of magnesium carbonate with the free alkali hydroxides present in the cement porewater also...

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Mesoporous magnesium carbonate

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Mesoporous magnesium carbonates (MMCs) constitute a family of magnesium carbonate materials with high specific surface areas. It was first reported in...

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Magnesium

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to magnesium's boiling point. Magnesium forms a variety of compounds important to industry and biology, including magnesium carbonate, magnesium chloride...

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Magnesium compounds

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magnesium carbonate, magnesium chloride, magnesium citrate, magnesium hydroxide (milk of magnesia), magnesium oxide, magnesium sulfate, and magnesium sulfate...

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Magnesium acetate

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Synthesis of magnesium acetate from the reaction of magnesium hydroxide with acetic acid. 2 CH3COOH + Mg(OH)2 → (CH3COO)2Mg + 2 H2O Magnesium carbonate suspended...

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Rhinolith

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body, blood clot or secretion by slow deposition of calcium and magnesium carbonate and phosphate salts. Over time, they grow into large irregular masses...

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Carbonate rock

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various different time periods. Because the rock is made of calcium, magnesium, and carbonate ions, the mineral crystalline structure can be visualized similar...

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Magnesium iodide

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compounds for organic synthesis. Magnesium iodide can be prepared from magnesium oxide, magnesium hydroxide, and magnesium carbonate by treatment with hydroiodic...

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Liquid chalk

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actual chalk. Liquid chalk can be a variation of normal chalk (see: magnesium carbonate) used to improve grip for sports, such as rock climbing, weight lifting...

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Phosphate binder

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entities (such as magnesium, aluminium, calcium, or lanthanum salts) that react with phosphate and form an insoluble compound. Calcium carbonate Calcium-based...

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Lithium carbonate

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Lithium carbonate is an inorganic compound, the lithium salt of carbonic acid with the formula Li 2CO 3. This white salt is widely used in processing...

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Chalk

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Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under...

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Magnesium bromide

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basic salts) with hydrobromic acid. It can also be made by reacting magnesium carbonate and hydrobromic acids, and collecting the solid left after evaporation...

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