Calcium Sulfate Dihydrate → Calcium Sulfate, Hemihydrate

HRID 414875

反応式

HRID 414875 の反応式
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]

参加物

3

実験手順

Gypsum building panels offer a high performance product for a reasonable price for finishing of building spaces. Gypsum, also known as calcium sulfate dihydrate, is heated to drive off crystalline water to produce calcium sulfate anhydrite and/or calcium sulfate hemihydrate, also known as stucco, calcined gypsum or Plaster of Paris. The building panels are made by combining stucco with water. Calcined gypsum and water are combined and an interlocking matrix of gypsum crystals is formed. After the hydration of the calcined gypsum, excess water is driven off by heating, the resulting product is a relatively strong panel, having a good surface for receiving decorative finishes such as paint or wallpaper.

後処理

  1. temperatureis heated

出典と根拠

ORDレコード
ord-07fb278712a24f1498f3e14898e44be0
出典データセット
uspto-grants-2012_01
特許番号
US08088218B2

関連ノート

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