magnesium carbonate

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 (Mg) [mag-ne´ze-um]
a chemical element, atomic number 12, atomic weight 24.312. (See Appendix 6.) Its salts are essential in nutrition, being required for the activity of many enzymes, especially those concerned with oxidative phosphorylation. It is found in the intra- and extracellular fluids and is excreted in urine and feces. The normal serum level is approximately 2 mEq/L. Magnesium deficiency causes irritability of the nervous system with tetany, vasodilation, convulsions, tremors, depression, and psychotic behavior.
Homeostasis of magnesium in extracellular fluids. The normal serum magnesium level is regulated by intestinal and renal function. Most of the body's magnesium is stored in bones, muscle, and soft tissue. From Malarkey and McMorrow, 2000.
magnesium carbonate an antacid.
magnesium chloride an electrolyte replenisher and a pharmaceutic necessity for hemodialysis and peritoneal dialysis fluids.
magnesium citrate a saline laxative used for bowel evacuation before diagnostic procedures or surgery of the colon; administered orally.
magnesium hydroxide an antacid and cathartic.
magnesium oxide an antacid and a sorbent in pharmaceutical preparations; called also magnesia.
magnesium salicylate see salicylate.
magnesium silicate MgSiO3, a silicate salt of magnesium; the most common hydrated forms found in nature are asbestos and talc.
magnesium sulfate Epsom salt; an anticonvulsant and electrolyte replenisher, also used as a laxative and local antiinflammatory.
magnesium trisilicate a combination of magnesium oxide and silicon dioxide with varying proportions of water; used as a gastric antacid.

mag·ne·si·um car·bon·ate

agent used in gastric and intestinal acidity and as a laxative.

magnesium carbonate

MgCO3·3H2O; a bulky, white, odorless powder, taken by mouth to neutralize stomach acid.
CAS # 546-93-0
See also: magnesium

magnesium carbonate

A mild antacid drug used to treat DYSPEPSIA. Brand names of preparations containing it are Algicon and Topal.
References in periodicals archive ?
"Manufacture, storage, distribution, transportation or sale of Pan Masala containing magnesium carbonate is completely banned in the state," he had added.
* Calcium carbonate, magnesium carbonate, and deglycyrrhizinated licorice extract target esophageal acid without disrupting gastric acid production.
In this region the Serpentinites and serpentinized Harzburgites often in surface sections, have transformed into Hontite which is a Calcium and Magnesium Carbonate with chemical formula of [Mg.sub.3][Ca.sub.3][Co.sub.3]; these ores are scattered over the Serpentines' surfaces in the form of thin white balls.
In previous research, the origin of this unique performance duality has been related to the protective presence of magnesium carbonate formed by treating Mg particles with carbonic acid.
Another problem is the conversion of dissolved calcium and magnesium bicarbonate to insoluble calcium and magnesium carbonate when the water is heated.
Gutka and paan masala contain nicotine, alum, magnesium carbonate, ammonium chloride, perfumes, gambier, paraffin, supari , katha and chuna .
One possible approach to increasing the life of a silica lining is to oxygenate the molten bath upon charging the furnace by adding a compound like iron oxide or magnesium carbonate to provide oxygen to the reactive elements.
Specialty Chemical includes calcium chloride, calcium chloride (flakes), chlorinated paraffin oil (CPW), ferric chloride, magnesium carbonate, magnesium chloride, nickel chloride, poly aluminum chloride and sulphonated chlorinated paraffin wax.
About 20 products have been identified as possibly being affected, including in particular copper, tungsten, bauxite or magnesium carbonate.
Gaydon had observed blow-holes forming as he was evacuating gas from a flask containing magnesium carbonate.
It also adds iodine; the sugar dextrose to stabilize the iodine; and anti-caking agents like aluminum silicate, magnesium carbonate or calcium silicate to absorb moisture and keep the salt dry in humid conditions.
Magnesium carbonate is produced as flat platelets of 3.2 MgC[O.sub.3] x MG[(OH).sub.2] x 3.2 [H.sub.2]O.