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CAS No.: 1305-62-0
Molecular Weight：74.09268
Introduction:
Calcium hydroxide (Ca(OH)₂) is an inorganic compound. It is composed of calcium ions (Ca²⁺) and hydroxide ions (OH⁻) in a stoichiometric ratio of 1:2. At room temperature, calcium hydroxide exists as a white, odorless solid, commonly encountered in the form of a fine powder. It is only sparingly soluble in water, forming a solution known as limewater, which exhibits a faintly bitter taste and alkaline properties.
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PRODUCT DESCRIPTION
Calcium hydroxide, [Ca(OH)2], also called slaked limeor hydrated lime, is a white solid that dissolvessparingly in water. It is manufactured by adding water tocalcium oxide, a process that emits heat and is known asslaking.Calcium hydroxide is a cheap alkali, used forneutralizing the acidity of acid soils and in themanufacture of mortar, white wash, bleaching powderand glass. It is an excellent absorbent for carbon dioxideto produce insoluble calcium carbonate and has aneutralizing value of 179%, compared to 100% of purecalcium carbonate.
Definition
Lime water: A solution of calcium hydroxidein water. If carbon dioxide is bubbledthrough lime water a milky precipitate ofcalcium carbonate forms. Prolonged bubblingof carbon dioxide turns the solutionclear again as a result of the formation ofsoluble calcium hydrogencarbonate(Ca(HCO3)2).
General Description
Odorless white granules. Sinks in water.
Potential Exposure
Calcium hydroxide is used in agriculture and in fertilizer manufacture; it is used in the formulation of mortar, plasters, and cements; it is used as ascrubbing and neutralizing agent in the chemical industry.For making insecticides, acaricides, and products to controlarthropods
Produe Method
Calcium hydroxide is manufactured by adding water to calciumoxide, a process called slaking.
Purification MethodsHeat analytical grade calcium carbonate at 1000o during 1hour. Allow the resulting oxide to cool and add slowly to water. Heat the suspension to boiling, cool and filter through a sintered glass funnel of medium porosity (to remove soluble alkaline impurities). Dry the solid at 110o and crush it to a uniformly fine powder. [Ehrlich in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 934 1963.
Shipping
UN3262 Corrosive solid, basic, inorganic, n.o.s.,Hazard class: 8; Labels: 8-Corrosive material, TechnicalName required3.8 UsageIn the manufacture of mortar, plaster, whitewash, and paper pulp; in lubricants; in drilling fluids3.9 Waste DisposalLandfill or admixture withacid industrial wastes prior to lagooning
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Inventory 2-3 working days New manufacturing 7-10 working days
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