magnesium silicate

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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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
References in periodicals archive ?
Glasser, "Synthesis and characterization of magnesium silicate hydrate gels," Cement and Concrete Research, vol.
Statistical analysis revealed that the two magnesium silicate groups achieved similar tear strength rates, whereas that obtained for the MS-20 group was significantly statistically higher than that obtained for the CG group.
The mixture of adsorbents applied for purification, that is, active carbon and magnesium silicate, appeared to be promising in regard to changing the properties of the raw material used for transesterification reaction.
The silica and the magnesium silicate obtained were subjected to a comprehensive range of tests to evaluate their physicochemical properties.
Tissue mineralogic analyses showed variable amounts of sheets of aluminum and magnesium silicates, chrysotile asbestos, calcium phosphate, and calcium sulfate.
Consequently, after treatment, slag will contain magnesium silicates rich in iron oxide, which will increase its aggressive tendency.
The DALSORB series is based on MAGNESOL[R]--a synthetic, amorphous form of magnesium silicate. It thoroughly cleans frying oil by physically removing food particles during filtration, and removes--by adsorption oil soluble substances like Free Fatty Acids, colour bodies, and other polar compounds during contact.
Fibrous hydrated magnesium silicate or chrysotile is the most common form of asbestos and belongs to the serpentines.
Micro flocs generated by highly porous sodium aluminosilicates replaced magnesium silicate in the wet end.
The biodegradable plastic is made mainly of polylactic acid, taken from corn protein, and magnesium silicate contained in soil.
The functional group for the interaction on the talc surface is magnesium silicate hydroxide.
A vulcanizable rubber composition comprising a nitrile group containing highly saturated copolymer rubber, an ultrafine magnesium silicate powder; said nitrile group containing highly saturated copolymer rubber being obtained by hydrogenating the conjugated diene part of an unsaturated nitrile-conjugated diene-unsaturated carboxylic acid ester copolymer.