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Home >> Inorganic Chemistry Dictionary >> Calcium Cyanide, Californium
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Calcium Cyanide
Ca(CN)2, in pure form, a white powder that gives off hydrogen cyanide in air at normal humidity; prepared commercially in impure black or greasy flakes; used as an insecticide and rodenticide. Also known as black cyanide.
Calcium fluoride
CaF2, colorless, cubic crystals that are slightly soluble in water and soluble in ammonium salt solutions; used in etching glass and preparing hydrofluoric acid.
Calcium sulphate
1. CaSO4, a white crystalline salt, insoluble in water; used in Keene’s cement, in pigments, as a paper filler, and as a drying agent. 2. Either of two hydrated forms of the salt; the dihydrate, CaSO4.2H2O, and the hemihydrate, CaSO4.½H2O
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Calcium hydride
CaH2, in pure form, white crystals that are insoluble in water; used in the production of chromium, titanium, and zirconium in the hydromet process.
Calcium hydroxide
Ca(OH)2, white crystals, slightly soluble in water, used in cement, mortar, and manufacture of calcium salts. Also known as hydrated lime
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Calcium iodide
Cal2, a yellow hygroscopic powder that is very soluble in water; used in photography.
Calcium nitrate
Ca(NO3)2.4H2O, colourless, monoclinic crystals that are soluble in water, the anhydrous salt is very deliquescent; used as a fertilizer and in explosives.
Also known as nitrocalcite.
Calcium silicate
any of three silicates of calcium; tricalcium silicate Ca3SiO5; dicalcium silicate, Ca2SiO4; Calcium metasilicate, CaSiO3.
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Calcium oxalate
CaC2O4.H2O a salt of oxalic acid in the form of white crystals that are insoluble in water.
Calcium peroxide
CaC2, a cream-coloured powder that decomposes in water; used as an antiseptic and a detergent
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Calcium plumbate
Ca(PbO3)2, orange crystals that are insoluble in cold water but decompose in hot water; used as an oxidizer in the manufacture of glass and matches.
Calcium plumbite
CaPbO2, colorless crystals that are slightly soluble in water.
Calcium pyrophosphate
CaP2O7 White, abrasive powder, used in dentifrice polishes, in metal polishes, and as a food supplement.
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Calcium sulphide
CaS, in pure form, white cubic crystals, slightly soluble in water; used as a base for luminescent materials. Also known as heper calcies; suphurated lime.
Calcium sulphite
CaSO3.2H2O, a white-powder that is soluble in dilute sulphurous acid; may be dehydrated at 150°C to the anhydrous salt; used in the sulphite process for the manufacture of wood pulp.
Californium
a radioactive transuranic element of the actinoid series of metals, not found naturally on Earth. Several radioisotopes have been synthesized, including Californium 252 used as an intense source of neutrons.
Calorie, cal
a unit energy approximately equal to 4.2 Joules. The international table calorie is equal to 4.184 Joules. Also used as kilo-calories per gram (for goods) and kilocalories per kilogram (for fuels) units for the calorific values.
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