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Topic: Calcium sulphate

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	calcium - Hutchinson encyclopedia article about calcium (Site not responding. Last check: 2007-10-10)
		Calcium is an essential component of bones, teeth, shells, milk, and leaves, and it forms 1.5% of the human body by mass.
		Calcium ions in animal cells are involved in regulating muscle contraction, blood clotting, hormone secretion, digestion, and glycogen metabolism in the liver.
		It is acquired mainly from milk and cheese, and its uptake is facilitated by vitamin D. Calcium deficiency leads to chronic muscle spasms (tetany); an excess of calcium may lead to the formation of stones (calculi) in the kidney or gall bladder.
	encyclopedia.farlex.com /calcium (292 words)

	Bone Graft Substitutes - Stimulan - Calcium Sulphate for Surgical Implantation (Site not responding. Last check: 2007-10-10)
		The insertion of calcium sulfate in a bony defect results in no greater inflammatory reaction than normally is present in the area of fracture.
		The presence of calcium sulfate did not inhibit the normal growth or healing of bone, and the use of calcium sulfate in infected cavities did not give rise to extra hazards or complications.
		Calcium sulphate is found in its natural state as gypsum (CaSO4.2H2O) which is mined as gypsum rock.
	www.biocomposites.com /stimulan_report.html (1877 words)

	Calcium Carbonate (Site not responding. Last check: 2007-10-10)
		Calcium carbonate is very important in the field of art because it serves as a universally mixable and matchable color.
		Calcium carbonate, once made into paint, can be mixed with any other paint in order to make what might be a very brilliant hue into something paler or lighter in color.
		This is calcium carbonate as a pigment in an egg tempera binder.
	www.sewanee.edu /chem/Chem&Art/Detail_Pages/Pigments/Calcium_Carbonate (330 words)

	Journal of Bone and Joint Surgery: Biodegradation and biocompatability of a calcium sulphate-hydroxyapatite bone ... (Site not responding. Last check: 2007-10-10)
		An injectable material consisting of calcium sulphate mixed with hydroxyapatite was investigated as a possible alternative to autograft in the restoration of bone detects.
		Pettier further concluded that the presence of calcium sulphate in a wound did not inhibit the formation of bone and that it was removed from the site of implantation irrespective of whether or not new bone formation occurred.
		Infection in wounds containing calcium sulphate was not complicated by sequestration of the material: it either drained out or was absorbed.' In the 1990s the use of calcium sulphate was gradually substituted by calcium phosphates, mainly hydroxyapatite (HA).
	www.findarticles.com /p/articles/mi_qa3767/is_200401/ai_n9400647 (1362 words)

	Calcium (Ca) - Chemical properties, Health and Environmental effects
		Calcium hypochlorite (whitening powder) is produced in the industry when passing chlorine through a lime solution, and has been used as a whitening agent and as water purifier.
		The dehydrated calcium sulphate is the mineral gypsum, constitutes the bigger portion of Portland concrete, and has been used to reduce the alkalinity of soils.
		Calcium should be taken together with magnesium in a 2:1 rate, that is to say, if you ingest 1000 mg of calcium, you should also ingest 500 mg of magnesium.
	www.lenntech.com /Periodic-chart-elements/Ca-en.htm (1256 words)

	Plaster Architecture Project: Essay
		Calcium hydroxide, or slaked lime, is made by grinding quicklime (calcium oxide) with water; this forms a fine-grained precipitate.
		Calcium oxide is primarily used in the manufacture of slaked limes for mortar, plasters and cements.
		Synonyms: anhydrite; karstenite; muriacite; anhydrous sulphate of lime; anhydrous gypsum;
	www.plasterarc.net /essay/essay/CassarC1.html (1089 words)

	Facts about Hydroponic Nutrients (Site not responding. Last check: 2007-10-10)
		Calcium sulphate is a cheap source of calcium but, is almost insoluble, therefore the more expensive calcium nitrate is used.
		Calcium is supplied by calcium nitrate, this also supplies a portion of the nitrates, any additional nitrogen should be supplied by potassium nitrate or with the use of Nitric acid in pH correction.
		This supplies a portion of the sulphates the majority of which is supplied by magnesium sulphate, while also supplying the magnesium required.
	www.hydrosupply.com /NewFiles/nutfacts.html (472 words)

	Pumpable composition for water-purifying purpose containing iron (II) sulphate, and a method for producing the same - ...
		calcium hydroxide calcium oxide, calcium carbonate, dolomite barium hydroxide, barium oxide, barium carbonate and corresponding strontium compounds.
		The dispersing agent in the composition is suitably a calcium compound, preferably calcium carbonate, calcium hydroxide, calcium oxide or dolomite.
		The mixing ratios between the sulphate and the chloride solution were varied within the range of 1.5-3 (g/g) and the amounts of chemicals added were varied between 0.07 and 0.7%, i.e.
	www.freepatentsonline.com /4402851.html (2705 words)

	SULPHUR - Online Information article about SULPHUR
		The reduction of sulphates to sulphides by means of organic matter, probably through the agency of sulphur-bacteria, may also indirectly furnish sulphur, and hence it is frequently found in deposits of See also:
		solution of poivsulphides and thiosulphate of calcium thus produced is clarified, diluted largely, and then mixed with enough of pure dilute hydrochloric acid to produce a feebly alkaline mixture when sulphur is precipitated.
		industrial scale for the manufacture of sulphuric acid, for the preparation of sodium sulphate by the Hargreaves process, and for use as a bleaching-disinfecting agent and as a preservative.
	encyclopedia.jrank.org /STE_SUS/SULPHUR.html (5183 words)

	Acidity Regulators
		Calcium acetate is used in food as a thickening agent (cake mixtures, puddings, pie fillings), as a buffer in controlling the pH of food during processing, as a preservative to prevent microbial growth, and as a calcium supplement in pet products.
		Calcium fumarate is the calcium salt of fumaric acid, E297, and is used as an acidity regulator in food.
		Calcium sulphate occurs naturally in the form of gypsum, and may be used as a sequestrant in food as well as a buffer and firming agent.
	www.chm.bris.ac.uk /webprojects2001/anderson/acidityregulators.htm (1451 words)

	Making tofu with calcium sulphate (Site not responding. Last check: 2007-10-10)
		As making tofu with calcium sulphate related subjects continue to gain in popularity, there will be many more locations to learn more about this weighty topic.
		As you are looking for making tofu with calcium sulphate news and information, be sure to utilize everyone of the sources available.
		As making tofu with calcium sulphate related subjects continue to gain in popularity, there will be more locations to learn more about this pressing theme.
	www.vegetarian-website.com /making-tofu-with-calcium-sulphate.html (441 words)

	Hydraulic cements - Patent 4042408 (Site not responding. Last check: 2007-10-10)
		A method according to claim 1, wherein the mineraliser containing sulphur is calcium sulphate or a hydrate thereof, an alkali metal sulphate or a double alkali metal calcium sulphate, or a mixture thereof.
		Thus the mineralising effect of calcium fluoride on Portland cement mixes by enhancing the formation of the clinker phases, paticularly the silicate phases, during burning, and the concomitant retardation of the set and the depression of the early strength of the resultant concrete by such an addition, is well documented in the literature.
		The sulphate may be present in the clinker as a calcium sulphate, an alkali metal sulphate, a double alkali metal calcium sulphate salt or a mixture thereof.
	www.freepatentsonline.com /4042408.html (9175 words)

	Calcium Sulfate, Calcium Sulfate Manufacturers Suppliers Exporters of Calcium Sulfate (Site not responding. Last check: 2007-10-10)
		Exporters of light calcium sulphate, levigated china clay, micronized china clay, calcined clay, aluminium silicate, calcium sulphate, zinc stearate, zinc stearate, zinc oxide active and preciptated silica.
		Stockist and indenting agents of ammonium chloride, potassium chloride, sodium chloride, dried ferrous sulphate, ferrous glycine sulphate, calcium carbonate, methyl salicylate, zinc sulphate, heptahydrade IP and zinc sulphate monohydrade.
		We manufacture and supply of chemicals calcium sulphate, calcium carbonate, calcium hydroxide, sodium and potassium feldspar, kaolin (pharma, cosmetic & rubber grade), plaster of paris, talcum powder, diatomite earth powder, fuller's earth powder.
	www.indianchemicalportal.com /calcium-sulfate.html (905 words)

	Biocomposites Ltd (Site not responding. Last check: 2007-10-10)
		Biocomposites Ltd engineer calcium sulphate bone substitute products for bone grafting and bone loss using synthetic high purity calcium sulphate to create a totally resorbable bone substitute.
		Biocomposites' absorbable devices are used globally by surgeons and clinicians to regenerate bone in fractures, spinal fusions and in cases involving bone loss due to trauma, disease or surgery.
		Stimulan - calcium sulphate pellets made from a unique and proprietary synthetic process, ensuring consistent and reproducible results.
	www.biocomposites.com (414 words)

	Calcium Sulphate (Site not responding. Last check: 2007-10-10)
		be theresult of calcium sulphate or calcium carbonate scaling in the...
		Of the thermoluminescence phosphors, dysprosium doped calcium sulphate (CaSO4:Dy) phosphor is one of the...
		bone consists of apatite and calcium sulphate and the porosity is developed...
	www.boltondrug.com /cal-mag/--calcium-sulphate.html (551 words)

	Acid Sulphate Soils
		The calcium carbonate in the shell when ground allows all the calcium carbonate to be neutralised by any acid caused by oxidation of the soil.
		When sulphuric acid reacts with aquatic shells (calcium carbonate) in the ground it forms an insoluble layer of calcium sulphate on the surface and any further reaction is retarded if not stopped.
		In Australia, the acid sulphate soils of most concern are those which formed within the past 10,000 years, after the last major sea level rise.
	www.rag.org.au /acidsulphate (709 words)

	Digitalfire Material Database: Calcium Sulphate (Site not responding. Last check: 2007-10-10)
		Anhydrous gypsum is soluble in water and used as a floculant to prevent settling in glaze slurries.
		Calcium sulphate is often found in raw clay deposits as a partially soluble impurity which causes efflorescence.
		During drying the salts are left behind of the surface of the clay to discolor it after firing.
	digitalfire.com /material/m-01b161.htm (123 words)

	Lund University, Doctoral Dissertation (Site not responding. Last check: 2007-10-10)
		The mechanical properties of this formulation were investigated by focussing on the factors affecting the compressive strength of the bone substitute.
		After 4 weeks, most of the calcium sulphate was resorbed and new bone tissue surrounded the HA particles.
		By incorporation of calcium sulphate, macroporosity may be obtained to allow bone ingrowth.
	www.lub.lu.se /cgi-bin/show_diss.pl?db=global&fname=med_771.html (696 words)

	3.0 Discussion (Site not responding. Last check: 2007-10-10)
		OPC places calcium sulphate with some calcium hydroxide into solution.
		CSA places aluminium into solution with a small amount of calcium and sulphate.
		The grout formed a gel after a relatively short time, this was followed by a rapid increase in cube temperature.
	myweb.tiscali.co.uk /ettringite/chap5_2/chap5P2.htm (1151 words)

	Processed Gypsum Products Australia - Horticultural products
		In fact, the areas where gypsum is used as a soil amendment or for an economical source of calcium and sulphur is extremely broad and includes enterprises from mushroom composts and potting mixes to animal feed rations.
		Gypsum, (calcium sulphate) provides large amounts of the macro-nutrients, calcium and sulphur, essential for optimum plant growth.
		Hi-Ag gypsum (Calcium Sulphate) is a natural, premium grade product, proven to increase yields and improve soil structure.
	www.pgp.com.au (384 words)

	fine_chem (Site not responding. Last check: 2007-10-10)
		Barium sulphate LR Benedict's reagent (Qualitative) LR Benzaldehyde LR Benzaldehyde AR Benzal konium chloride LR 50%
		Dimethylglyoxime AR Dimethyl sulphate LR Dimethyl sulphoxide LR Dimethyl sulphoxide AR 2,4-Dinitrophenyl hydrazine LR 2,4-Dinitrophenyl hydrazine AR 1,4-Dioxan LR 1,4-Dioxan AR 1,4-Dioxan for HPLC and Spectroscopy
		Manganese chloride AR Manganese dioxide LR Manganese dioxide AR Manganese fluoride LR Manganese oxalate LR Manganese phosphate LR Manganese sulphate LR (Manganous sulphate)
	business.vsnl.com /dharani/fine_chem.htm (1991 words)

	Re: How big a problem is PRB with calcium sulphate blinding o... (Site not responding. Last check: 2007-10-10)
		Southern is being advised that the problem is a function of free calcium.
		He agreed that a filter that would remove the calcium ahead of the SCR would be a solution.
		He volunteered that an acid which would react with the calcium ahead of the SCR would also be a possible solution.
	www.mcilvainecompany.com /prbcoal/_disc2/00000024.htm (192 words)

	Calcium sulphate used to fight listeria
		21/02/2003 - An acidified calcium sulphate solution called Safe2O has been shown to significantly reduce the amount of Listeria monocytogenes on hot dogs and prevented regrowth of the pathogen over a 12-week period, according to a Texas A&M study funded by AMI Foundation.
		An hour after being treated with the Listeria monocytogenes mixtures, the frankfurters were submerged for 30 seconds in dips containing saline solution (control); acidified calcium sulphate (Safe2O); 3.3 per cent potassium lactate; or 3.4 per cent lactic acid.
		The frankfurters were then vacuum packaged, stored under refrigeration (4.4 degrees C) and evaluated at two-week intervals over a 12-week period.
	www.foodqualitynews.com /news/news-NG.asp?id=13194 (527 words)

	Calcium Carbonate, Calcium Carbonate Manufacturers Suppliers Exporters
		Exporters of Calcium Carbonate granual, Calcium Carbonate ppt, Calcium Carbonate oyster shell.
		Manufacturersa nd exporters of pioneers in Calcium oxide, Calcium hydroxide and Calcium Carbonate.
		Importers of titanium dioxide, Calcium Carbonate, hdpe, lldpe, ldpe granules.
	www.indianindustry.com /chemicals/1615.html (1335 words)

	Aluminum Silicate Supplier,Calcium Sulphate Exporters,Aluminum Silicate Exporters,Calcium Sulphate Suppliers,India (Site not responding. Last check: 2007-10-10)
		Aluminum Silicate Supplier,Calcium Sulphate Exporters,Aluminum Silicate Exporters,Calcium Sulphate Suppliers,India
		With an objective to serve various industries, Alka Minerals and Chemicals has established itself as a pioneer in the field of mineral processing and supply.
		We have entrenched our position in the market as one of the leading exporters and suppliers of chemicals like aluminum silicate, calcium sulphate, gypsum powder etc. on the basis of consistent quality, competitive price and timely delivery.
	www.indiamart.com /alkamine (540 words)

	Aluminium Sulphate, Aluminium Sulphate Manufacturers Suppliers Exporters
		Suppliers of alum, Aluminium Sulphate, magnesium Sulphate, magnesite, silica, zeolite, labsa (slurry), soda ash, silica sand, calcium chloride, copper Sulphate, ferrous Sulphate, talc, calcite, soap stone, chinaclay, dolomite, calcium carbonate etc.
		Manufacturers and exporter of magnesium Sulphate hepta, Aluminium Sulphate, zinc Sulphate hepta, zinc Sulphate mono, zinc edta, micronutrients.
		Sellers of Aluminium Sulphate, non ferric lump/powder, sodium sulphite, sodium Sulphate,caustic soda flakes, red oxide, ferric chloride liqued / anhydrous, calcium carbonate, china clay.
	www.indianindustry.com /chemicals/321.html (707 words)

	CO2, calcium sulphate (Site not responding. Last check: 2007-10-10)
		If your water contains _less_ than 0.5 ppm, the more surface agitation you have the faster CO2 will _enter_ the water.
		You can mold it into a small lump that can be put into your > tank to dissolve slowly as required.
		It is not clear that calcium > carbonate is in and of itself useful, tho.
	fins.actwin.com /aquatic-plants/month.9511/msg00272.html (455 words)

	Chemical Manufacturers,Industrial Chemical Exporters,Cleaning Chemicals,Chemical Products Suppliers,India (Site not responding. Last check: 2007-10-10)
		Manufacturer and exporters of magnesium sulphate heptha hydrate (epsom salt) and magnesium oxide in agricultural grade and technical grade.
		Engaged in exporting of sulphate, mono ammonium phosphate, mono potassium phosphate, potassium nitrate, sulphate of potash, magnesium sulphate, zinc sulphate and ferrous sulphate.
		Exporter of chemicals like calcium chloride, zinc chloride, magnesium chloride, calcium carbonate, sodium sulphite, calcium hydroxide, zinc oxide, zinc carbonate, aluminum silicate, zinc oxide, micronized calcite, micronized dolomite, micronized baraytes.
	dir.indiamart.com /indianexporters/dy_misc.html (5202 words)

	Untitled
		181369 Ammonium Iron(II) Sulphate 0,1 mol/l SV 185227 Ammonium Iron(II) Sulphate 0,12 mol/l SV 131365 Ammonium Iron(III) Sulphate 12-hydrate PA-ACS-ISO
		251824 Carmine (Lacquer of carminic acid with calcium and aluminium) (C.I. 124842 Carmine hydrosoluble (Lacquer of carminic acid with calcium and aluminium) (C.I. 254354 Carminic Acid (C.I. 173355 Carrez's Reagent I RE 173356 Carrez's Reagent II RE 403691 Casein Hidrolysat Peptone CULTIMED
		211153 Chromium(VI) Oxide QP 131284 Chromium(III) Potassium Sulphate 12-hydrate PA-ACS
	www.hamcopk.com (9401 words)

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