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sulfate (or calcium sulphate) is the inorganic compound with the formula CaSO4 and related hydrates. In the form of γ-anhydrite (the anhydrous form), it...

mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. It is widely mined and is used as a fertilizer and as the main constituent...

All four dihalides of calcium are known. Calcium carbonate (CaCO3) and calcium sulfate (CaSO4) are particularly abundant minerals. Like strontium and barium...

(meaning that it has two molecules of water), with the chemical formula CaSO4·2H2O. Selenite contains no significant selenium – The similar names both...

(248–356 °F) in a kiln: CaSO 4 ⋅ 2 H 2 O ⟶ heat CaSO 4 ⋅ 1 2 H 2 O + 1 1 2 H 2 O ↑ {\displaystyle {\ce {CaSO4.2H2O {\overset {heat}{{}->{}}}{CaSO4.1/2H2O}+ 1\!1/2...

this is calcium sulfate hemihydrate (CaSO4·0.5H2O or 2CaSO4·H2O), which is the hemihydrate of calcium sulfate (CaSO4). Kent, James A. (2007-10-08). Kent...

to 210,000 cu ft). The chamber contains giant selenite crystals (gypsum, CaSO4 · 2 H2O), some of the largest natural crystals ever found. The largest is...

Using sulfuric acid, fluorapatite is converted to a mixture of Ca(H2PO4)2 and CaSO4. This solid is called single superphosphate. Residual HF typically...

to the relatively insoluble form, and heat is produced. 2 (CaSO4·½ H2O) + 3 H2O → 2 (CaSO4.2H2O) + Heat The setting of unmodified plaster starts about...

calcium sulfate mineral with formula CaSO4·⁠1/2⁠H2O or 2CaSO4·H2O. In other words it has half a water molecule per CaSO4 unit, hence its synonym calcium sulfate...

dehydration of gypsum in a kiln: CaSO 4 ⋅ 2 H 2 O + {\displaystyle {\ce {CaSO4.2H2O +{}}}} heat ⟶ {\displaystyle {\ce {->}}} CaSO 4 ⋅ 1 2 H 2 O + 1 1 2 H 2...

Strontium sulfate (SrSO4) is the sulfate salt of strontium. It is a white crystalline powder and occurs in nature as the mineral celestine. It is poorly...

liberated from the mineral by the action of concentrated sulfuric acid: CaF2 + H2SO4 → CaSO4(solid) + 2 HF Calcium fluoride is used to manufacture optical components...

precipitation from sea water is: Calcite (CaCO3) and dolomite (CaMg(CO3)2) Gypsum (CaSO4 · 2 H2O) and anhydrite (CaSO4). Halite (i.e. common salt, NaCl) Potassium...

Ca5(PO4)3OH + 5 H2SO4 → 3 H3PO4 + 5 CaSO4 + H2O Ca5(PO4)3F + 5 H2SO4 → 3 H3PO4 + 5 CaSO4 + HF Calcium sulfate (gypsum, CaSO4) is a by-product, which is removed...

sulfate is an inorganic compound with the chemical formula CuSO4. It forms hydrates CuSO4·nH2O, where n can range from 1 to 7. The pentahydrate (n = 5)...

a solid, leaving ammonium sulfate in the solution. (NH4)2CO3 + CaSO4 → (NH4)2SO4 + CaCO3 Ammonium sulfate occurs naturally as the rare mineral mascagnite...

Anhydrite, or anhydrous calcium sulfate, is a mineral with the chemical formula CaSO4. It is in the orthorhombic crystal system, with three directions of perfect...

manufacture of calcium silicate cement; CaSO4 is heated with coke and sand in this process: 2 CaSO4 + 2 SiO2 + C → 2 CaSiO3 + 2 SO2 + CO2 Until the 1970s,...

dry sorbent injection systems, further oxidize the CaSO3 (calcium sulfite) to produce marketable CaSO4·2H2O (gypsum) that can be of high enough quality...