Calcium Sulfate Dihydrate → Calcium Sulfate, Hemihydrate

HRID 846026

Reaktionsgleichung

Reaktionsgleichung von HRID 846026
O.O.[S:3]([O-:7])([O-:6])(=[O:5])=[O:4].[Ca+2:8]>O>[OH2:4].[S:3]([O-:7])([O-:6])(=[O:5])=[O:4].[Ca+2:8].[Ca+2:8].[S:3]([O-:7])([O-:6])(=[O:5])=[O:4]

Komponenten

3

Edukt 1

HCID 24928Calcium Sulfate Dihydrate

Produkt 1

HCID 3033839Calcium Sulfate, Hemihydrate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

When calcium sulfate dihydrate is heated sufficiently, a process called calcining, the water of hydration is driven off and there can be formed either calcium sulfate hemihydrate (CaSC4 ·1/2H2O ) or calcium sulfate anhydrite (CaSO4), depending on the temperature and duration of exposure. The term "calcined gypsum," as used herein, refers to both the hemihydrate and anhydrite forms of calcium sulfate.

Quellen und Nachweise

ORD-Eintrag
ord-b90df6d8b09d42bb9ef821eb6c6c6c96
Quelldatensatz
uspto-grants-1992_08
Patentnummer
US05135805

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