Calcium dihydroxide

SYNS BELL MINE BIOCALC CALCIUM DIHYDROXIDE CALCIUM HYDRATE CALCIUM HYDROXIDE (ACGIH, OSHA) CALVIT CARBOXIDE O HYDRATED LIME KALKHYDRATE O KEMIKAL O UMBUX UME MILK LIME WATER MILK OF LIME SLAKED UME... 

SYNONYMS calcium dihydroxide, calcium hydrate, caustic lime, hydrated lime, slaked... 

Figure 15.1. Structures of the trigonal-rhombohedral tr6 modifications of the Zintl phases CaSi2 and CaGe2, of the sheet polymers polygermyne (GeH) and siloxene (Si2HOH) and of the polygermyne calcium dihydroxide intercalation compound (Ca(OH)2(GeH)2) . In each case, a full unit cell in the c direction is shown.

Analysis of the structural and vibrational properties of the resulting material indicate that the reaction product contains the (GeH) layers of polygermyneJ" However, in contrast to the transformation in aqueous HCl, Ca cannot be removed, especially when the reaction is performed in air. Rather, the Ca layers are transformed into (Ca(OH)2) layers, which are intercalated between the (GeH) layers. We therefore call this material polygermyne calcium dihydroxide intercalation compound (Ca(OH)2(GeH)2) . Its structure is also shown in Figure 15.1. 

The time needed for thin films of CaGc2 to form this intercalation compound is of the order of several hours at ambient conditions. In contrast, Ca(Sii.xGe c)2 alloys react significantly faster, with thin films of CaSiGe being decomposed in less than 60 s. In the reaction of Ca(Sii. cGe c)2 with H2O, the formation of (GeH) layers competes with the formation of Si02. Indeed, crystalline layered polygermanosilyne calcium dihydroxide intercalation compounds have been found only for 0.7 < x < 1. " At lower Ge contents x, the reaction products become amorphous. 

Calcium dihydroxide. See Calcium hydroxide Calcium d(+)-N-(a,y-dihydroxy-p,p-dimethylbutyryl)-p-alaninate Calcium N-(2,4-dihydroxy-3,3-dimethyl-1-oxobutyl-P-alanine. See Calcium D-pantothenate Calcium diiodide. See Calcium iodide Calcium dilactate. See Calcium lactate Calcium dinitrate. See Calcium nitrate Calcium dinonyinaphthalene sulfonate CAS 57855-77-3 68425-34-3 Synonyms Dinonyinaphthalene sulfonic acid, calcium salt Naphthalenesulfonic acid, dinonyl-, calcium salt Empirical C28H44O3S V2Ca Properties M.w. 480.80 Uses Rust/corrosion inhibitor demulsifier in oils grease penetrant... 

Synonyms Agricultural lime Calcium dihydroxide Calcium hydrate Carboxide Caustic lime... 

Barium hexaferrite. See Barium ferrite Barium hexafluorosilicate Barium hexafluorosilicate (2-). See Barium fluosilicate Barium hydroxide. See Barium hydroxide lime Barium hydroxide lime CAS 17194-00-2 (anhyd.) 12230-71-6 (octahydrate) EINECS/ELINCS 241-234-5 Synonyms Barium dihydroxide Barium hydroxide Caustic baryta Definition Mixt. of barium hydroxide octahydrate and calcium hydroxide Empirical BaH202 Formula Ba(OH)2... 

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