| Dihydroxyaluminium sodium carbonate (general)
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| IUPAC name |
Dihydroxidoaluminium(1+) sodium carbonate
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| Identifiers
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| InChI |
InChI=1/CH2O3.Al.Na.2H2O/c2-1(3)4;;;;/h(H2,2,3,4);;;2*1H2/q;+3;+1 ;;/p-4/rCH2O3.AlH2O2.Na/c2-1(3)4;2-1-3;/h(H2,2,3,4);2-3H;/q;2*+1/p-2
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| InChIKey |
SEIGJEJVIMIXIU-GRHVGONVAA
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| Standard InChI |
InChI=1S/CH2O3.Al.Na.2H2O/c2-1(3)4;;;;/h(H2,2,3,4);;;2*1H2/q;+3;+1;;/p-4
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| Standard InChIKey |
SEIGJEJVIMIXIU-UHFFFAOYSA-J
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| CAS number |
[16482-55-6]
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| EC number |
240-536-4
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| ChemSpider |
11347551
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| Properties
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| Chemical formula |
[Al(OH)2]Na(CO3)
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| Molar mass |
143.99 g/mol
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| Hazards
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| EU index number |
not listed
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| Flash point |
non-flammable
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| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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Dihydroxialumini sodium carbonate (INN) or dihydroxyaluminum sodium carbonate (USAN) is a basic carbonate of aluminium and sodium, used as an antacid. It is prepared by the reaction of an aluminium salt with excess sodium carbonate in the presence of sodium hydroxide at pH 7.2–10.5.[1] It also occurs naturally as the mineral dawsonite.[2]
The mineral form has six-coordinate aluminium (four hydroxide ions and two trans carbonate ions) and six-coordinate sodium (four carbonate ions and two trans hydroxide ions).[3]
References
- ↑ Kaufman, Jeffrey L. (Nicholas Pty. Ltd.) Preparation of dihydroxyaluminium sodium carbonate. US Patent 4438085, issued 20 March 1984.
- ↑ Dawsonite, <http://webmineral.com/data/Dawsonite.shtml> (accessed 6 December 2009), WebMineral.com. Dawsonite, <http://www.mindat.org/show.php?id=1240> (accessed 6 December 2009), MinDat.org.
- ↑ Frueh, A. J.; Golightly, J. P. The crystal structure of dawsonite NaAl(CO3)(OH)2. Canadian Mineralogist 1967, 9 (1), 51–56.
Further reading
External links
