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sulfate - Encyclopedia.com Sulfates in which both hydrogens are replaced are called normal sulfates; sulfates in which only one hydrogen is replaced are called hydrogen sulfates, acid sulfates, or bisulfates. Barium sulfate occurs as barite ; calcium sulfate is found as gypsum, alabaster, and selenite; Epsom salts is magnesium sulfate; sodium sulfate occurs as its decahydrate, Glauber's salt ; and strontium sulfate occurs as celestite. Some sulfates were formerly known as vitriols; blue vitriol is cupric sulfate, green vitriol is ferrous sulfate, and white vitriol is zinc sulfate. www.encyclopedia.com /doc/1E1-sulfate.html   (1428 words)

Strontium chloride - Biocrawler Strontium chloride is a typical ionic metal salt, and it can be used as a source of other strontium compounds such as strontium chromate: Like barium chloride it can be used to test for sulfate ion, though not at such low concentration, since strontium sulfate is more soluble than barium sulfate. Strontium Chloride is occasionally used as a flame coloring agent in pyrotechnics. www.biocrawler.com /encyclopedia/Strontium_chloride   (246 words)

Strontium for bone health In addition to its antiresorptive activity, strontium was found to have anabolic activity in bone, and thus may have significant beneficial effects on bone balance in normal and osteopenic animals. These studies, the benefits of strontium ranelate (reducing fracture risk by as much as 50%) and the history of strontium in medical practice were discussed as an editorial in the New England Journal of Medicine, January 29th, 2004. Strontium is available as strontium carbonate, strontium chloride, strontium sulfate, strontium gluconate and strontium citrate. www.drhoffman.com /page.cfm/447   (873 words)

Strontium Information Center - strontium 90 Strontium is a chemical element strontium dihydrogen phosphate in the periodic table that has the symbol Sr and the atomic number 38. Strontium atomic emission spectrum of strontium is a bright silvery metal that is softer than calcium and barium strontium titanate + thermal even strontium symbol more reactive in water; strontium will decompose on contact to produce strontium hydroxide and hydrogen gas. Alternatively history of strontium it is made by reducing strontium oxide strontium chromate in paint with aluminium in a vacuum at a temperature at which strontium distills off. www.scipeeps.com /Sci-Chemistry_Topics_S/Strontium.html   (1246 words)

Sulfate Summary Organic sulfates are esters and are formed by reacting an alcohol with cold sulfuric acid or by the reaction of sulfuric acid with a double bond in an alkene. Strontium sulfate is sometimes used to produce iridescence in glass and pottery glazes, and can also be used as a fining agent (to remove bubbles in the molten glass) in crystal glass. Sulfates are therefore implicated in global dimming, which may have acted to offset some of the effects of global warming. www.bookrags.com /Sulfate   (1465 words)

Work-up of waste materials from barium or strontium sulfide leaching - Patent 5312604 A process for working-up waste materials from barium sulfide or strontium sulfide leaching in which the amount of waste material to be disposed of is substantially decreased. The preparation of strontium compounds is comparable to the preparation of barium compounds from barium sulfate. The sulfate or sulfuric acid is advantageously added in at least the quantity required for complete precipitation of the barium or strontium contained in the residue as barium or strontium sulfate. www.freepatentsonline.com /5312604.html   (2528 words)

strontium Strontium titanate is an interesting optical material as it has an extremely high refractive index and an optical dispersion greater than that of diamond. Natural strontium is a mixture of four isotopes; twelve other unstable isotopes are known to exist Alkaline earth metal; valence of 2; Isotopes: 88 (82.56%), 86 (9.86%), 87 (7.02%), 84 (0.56%); Heated metal combines with hydrogen to form strontium hydride and with nitrogen to form strontium nitride. Strontium occurs in nature in celestite (strontium sulfate) use strontianite (strontium carbonate). www.speclab.com /elements/strontium.htm   (509 words)

Sulfate - Water Contaminates - Aquapure Filters Most sulfate compounds originate from the oxidation of sulfite ores, the presence of shales, and the existence of industrial wastes. Sulfate is one of the major dissolved constituents in rain. Sulfates can also be reduced with a strong base anion exchanger, which is normally the last half of a two-column deionizer. www.aquapurefilters.com /contaminates/161/sulfate.html   (132 words)

strontium — FactMonster.com and strontianite are the chief ores of strontium. Principal uses of strontium compounds are in pyrotechnics (chiefly the nitrate) and in greases (the hydroxide). Strontium was first recognized as distinct from barium in 1790 by A. Crawford in a sample of its carbonate from a mine near Strontian, Scotland; his finding was later confirmed by T. Hope, M. Klaproth, and others. www.factmonster.com /id/A0846976   (426 words)

American Elements: Strontium Sulfate Supplier & Tech Info Strontium Sulfate is a moderately water and acid soluble Strontium source for uses compatible with sulfates. Sulfate compounds are salts or esters of sulfuric acid formed by replacing one or both of the hydrogens with a metal. Most metal sulfate compounds are readily soluble in water for uses such as water treatment, unlike fluorides and oxides which tend to be insoluble. www.americanelements.com /srs.html   (541 words)

Strontium - Overview, Discovery and naming, Physical properties, Chemical properties, Occurrence in nature Strontium is a member of the alkaline earth metals. Strontium is active enough to combine even with hydrogen and nitrogen when heated. Strontium is a relatively abundant element in the Earth's crust. www.chemistryexplained.com /elements/P-T/Strontium.html   (1362 words)

Chemistry and the Aquarium In the absence of strontium, the calcification is decreased by 80%. Strontium is present in many such foods, but not enough to have a significant impact on typical levels of strontium (~8 ppm). The morphology and crystallography of strontium sulfate crystals from the colonial radiolarian, Sphaerozoum punctatum. www.advancedaquarist.com /issues/nov2003/chem.htm   (5799 words)

Strontium Strontium is a metal, but as such has found little practical use. Strontium nitrate Sr(NO is mixed with carbon and sulfur to make red fire for use in fireworks, flares, and signal shells. One mineral form of strontium is a crystalline form of strontium sulfate called celestite. hyperphysics.phy-astr.gsu.edu /hbase/pertab/sr.html   (282 words)

11. DISSECTING AN ACTIVE HYDROTHERMAL DEPOSIT: THE STRONTIUM AND OXYGEN ISOTOPIC ANATOMY OF THE TAG HYDROTHERMAL ... The chemical and strontium- and oxygen-isotopic compositions of anhydrite are broadly similar throughout the mound, but are heterogeneous at a centimeter scale, with closely spaced samples displaying almost the full range of compositions. O of TAG anhydrite brackets the value of seawater sulfate oxygen (~9.34‰), which is known to be out of isotopic equilibrium with ocean-water oxygen at ocean temperatures. Anhydrite sulfate from active hydrothermal deposits, in isotopic equilibrium with fluids at approximately 200°C, will dissolve back into the oceans during episodes of hydrothermal quiescence, without further modification because of the sluggish kinetics of sulfate-water oxygen-isotopic exchange at low temperatures. www-odp.tamu.edu /publications/158_SR/ABSTRACT/11.HTM   (420 words)

Salifert Strontium 250 mL (Saltwater Aquarium Supplies > Additives > Strontium > Liquid Supplement ) Strontium is probably important for accelerating coral and calcareous algae growth. Since the growth of corals and calcareous algae goes hand in hand with strontium and calcium depletion, depletion of calcium (which is very easily measurable) usually means depletion of strontium as well. Strontium supplements should be designed in such a way that a too low or a too high strontium concentration is avoided. www.marinedepot.com /md_searchstatistics.asp?SearchStr=&action=view&idProduct=SF3151   (717 words)

NationMaster - Encyclopedia: Celestite In inorganic chemistry, a sulfate (IUPAC-recommended spelling; also sulphate in British English) is a polyatomic anion or a compound containing this group. Gypsum is a very soft mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. Halite is the mineral of sodium chloride, NaCl, commonly known as rock salt. www.nationmaster.com /encyclopedia/Celestite   (682 words)

strontium. The Columbia Encyclopedia, Sixth Edition. 2001-05 Strontium is a soft, silver-yellow metal with three allotropic crystalline forms (see allotropy). It is an alkaline-earth metal; in its physical and chemical properties it resembles calcium and barium, the elements above and below it in group IIa of the periodic table. Celestite and strontianite are the chief ores of strontium. www.bartelby.com /65/st/strontiu.html   (399 words)

celestite - Encyclopedia.com , it is important as a source of strontium and of certain of its compounds, e.g., strontium hydroxide, used in refining beet sugar, and strontium nitrate, used in red signal flares. Celestite ore is the raw material of strontium carbonate and the reserve of celestite in Qaidam Basin accounts for over 80... Jilong Strontium Industry Co Ltd by purchasing local bankrupt strontium carbonate enterprise in Chongqing Tonglian, one of main celestite producing areas in China. www.encyclopedia.com /doc/1E1-celestit.html   (841 words)

"PP21C-1707" in fm06 AB: A high resolution record of strontium and calcium isotopes over the Paleocene Eocene boundary will be presented from marine barite extracted from sediments collected by ODP Leg 199, at Site 1221 in the equatorial Pacific. Although radiogenic strontium isotopes appear to be stable over the P/E boundary, a high resolution record (less than 100 ky) has not been established. Because the residence time of Sr in the ocean today is approximately two million years, it is assumed that it could not record such a short perturbation in silicate weathering as the P/E. The variations in previously published Sr isotopes over this interval have been attributed to diagenesis of the recording phase. www.agu.org /cgi-bin/wais?hh=PP21C-1707   (331 words)

Strontium salt,consumer emergency flares manufacturer sale road flare,strontium chloride,strontium nitrate,strontium ... That is because the strontium is responsible for either a red or red-orange color. However, strontium nitrate is not a great oxidizer - a mixture of Sr(NO3)2 and a fuel will hardly burn. Our strontium nitrate plant is located at aijingshan.The strontium salt plant owns a celestite mine, which guaranties 2.1 millionton of reserves, and thus a production line from mining celestine to producing strontium salt such as Strontium Chloride www.fusee-flare.com   (547 words)

Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal Crystallized strontium sulfate is utilized by a small group of radiolarian protozoa, called the Acantharea, as a main constituent of their skeleton. Like many strontium compounds, strontium sulfate will produce a bright red flame when burned. The primary difference is that because of the sulfate ion this compound can be used as a high-temperature oxidizer. www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=strontium_sulfate   (154 words)

[No title] All salts of sulfate are soluble except for barium sulfate, lead(II) sulfate, and strontium sulfate. All salts of carbonate, phosphate and sulfite are insoluble, except for those of group IA and ammonium. All oxides and hydroxides are insoluble except for those of group IA, calcium, strontium and barium. pages.towson.edu /ladon/PracticeNIE.doc   (347 words)

Amino trimethylene Phosphonic Acid|ATMP|1-Hydroxy Ethylidene-1,1-Diphosphonic Acid|HEDP|Ethylene Diamine ... Inhibit scales formation of calcium carbonate, calcium sulfate, barium sulfate and strontrium sulfate, no scale is formed even when LSI value is 3.0. TH-2000 is mainly used in RO system where barium sulfate and strontium sulfate scales are badly deposited. It can inhibit calcium sulfate, barium sulfate and strontium sulfate in wide range, for calcium sulfate, 10 times Ksp, for barium sulfate, 2500 times Ksp and for strontium sulfate, 1200 times Ksp. wtchemical.en.chemnet.com /show/tlist--Water_Treatment_Chemicals--sell----1.html   (721 words)

sulfate — FactMonster.com are double sulfates, containing two different metals and two sulfate radicals. copper sulfate - copper sulfate copper sulfate, common name for the blue crystalline heptahydrate of cupric sulfate,... ferric sulfate - ferric sulfate ferric sulfate or iron (III) sulfate,chemical compound, Fe2(SO4)3, a yellow rhombic... www.factmonster.com /ce6/sci/A0847154.html   (336 words)

Halfbakery: Coloured Coal Strontium gives red, copper gives green, sodium gives yellow; blues and violets are also available (Barium ?). The crystals are difficult to tell apart from Celestite, but the Strontium in Celestite gives you red flames, as you note. Nevetheless, you might violate local regulations, so the coal could only be distributed on a local basis (bad economics). www.halfbakery.com /idea/Coloured_20Coal   (547 words)

Salifert Strontium 250 mL (Saltwater Aquarium Supplies > Additives > Strontium > Liquid Supplement ) This supplement contains predominantly strontium sulfate together with some other ingredients to avoid an ionic imbalance. Maintain a strontium concentration of 5 - 20 mg/L. Keep out of reach of children. Strontium Chloride Solution is a very pure and concentrated form of strontium, free of phosphates and nitrates. www.marinedepot.com /ps_ViewItem~idProduct~SF3151.html   (696 words)

Chemical Product: Strontium Salt The world's largest strontium mining area(Tianqing mountain) and its reserves of 8,000,000t help Chongqing to be the busiest area of strontium industry in China. Its chemical factory is located at the foot of the beautiful Bayue Mountain, occupying 2.33 hectare, with annual output of strontium carbonate 4500t, and 3000t of strontium nitrate, strontium hydroxide, strontium chloride, strontium sulfate, strontium ethanoic, etc. The factory owns total quality control(TQC) system, strict administration and qualified technical team. For example, strontium carbonate has low contents of sulfur and calcium; strontium nitrate, strontium chloride and strontium hydroxide have low contents of Ba, Na and Ca. www.fitug.de /debate/0208/msg00117.html   (334 words)

Search: Strontium Chloride Strontium chloride, hexahydrate CAS No.: 10476-85-4 Anhydrous; (10025-70-4.... Strontium Bone Maker design to help maintain strong and healthy bone. The result is a thick, clumpy precipitate after a delay. www.webmarket.com /webmkt.webmkt/search/web/Strontium%2BChloride/-/-/1/-/-/-/1/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/302349/right   (124 words)

Hoover's Business Directory - Products and Services - Hoover's Producer of barium, strontium and sulfur compounds also producing various grades of sodium silicate. Producer of barytes, organophilic clays, strontium sulfate, barium sulfate and bentonite. Produces sodium dichromate and basic chrome sulfate used for wood preservation, leather dying, and medicine manufacturing. www.hoovers.com /global/partners/business/directory/index.xhtml?path=%2Fdirectory%2Fchemicals%2Ffine_and_specialty_chemicals%2Fminerals_and_oxides&partner=7654457   (1773 words)

Energy Citations Database (ECD) - - Document #4117792 In the investigation of heterogeneous isotope and ion exchange on solid alkaline earth sulfates, it was established that strontium ions were exchanged to a relatively large extent on solid barium sulfate. A barium sulfate preparation suitable for use in the exchange tube was prepared by two consecutive reactions with silica gel. The specific surface of the "barium sulfate" thus prepared is an order of magnitude greater than that of precipitated barium sulfate. www.osti.gov /energycitations/product.biblio.jsp?osti_id=4117792&query_id=0   (240 words)

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