calcium sulfate

calcium sulfate Chemische Eigenschaften,Einsatz,Produktion Methoden

• Verwenden

  Pharmaceutic aid (tablet and capsule diluent).

• Verwenden

  Calcium Sulfate is a general additive available as both calcium sul- fate anhydrous, made by the high-temperature calcining of gypsum which is then ground and separated, and calcium sulfate dihydrate, which is made by grinding and separating gypsum containing about 20% water of crystallization. calcium sulfate anhydrous contains approximately 29% calcium, and calcium sulfate dihydrate contains approximately 23% calcium. it is used, among other things, as a filler and baking powder for standardization purposes; a firming agent in canned potatoes, tomatoes, carrots, lima beans, and pep- pers; in dough as a source of calcium ions (because the absence of calcium ions causes bread dough to be soft and sticky and to pro- duce bread of poor quality); in soft-serve ice cream to produce dry- ness and stiffness; as a calcium ion source for reaction with alginates to form dessert gels; and as a calcium source for food enrichment.

• Verwenden

  Calcium Sulfate is most often used as “gypsum” which is the dihydrate. In the form of b-anhydrite (the nearly anhydrous form), it is used as a desiccant. It is also used as a coagulant in products like “tofu”, which is a “bean curd”. When sold as a colorindicating variant under the name “Drierite ”, it appears blue or pink due to impregnation with cobalt chloride, which functions as a moisture indicator. In its natural state, unrefined calcium sulfate is a translucent, crystalline white rock. Many forms are known, including “Alabaster” and “Gypsum”. Selenite, Satin spar, Desert rose, and Gypsum flower are four varieties of Gypsum minerals; all four varieties are crystalline. The four “crystalline” varieties of gypsum are sometimes grouped together and called selenite. All have the same chemical formulation, CaSO4·2H2O. All varieties of gypsum are very soft minerals (hardness: 2 on Mohs scale). This is the most important identifying characteristic of gypsum.

• Definition

  ChEBI: Calcium sulfate is a calcium salt and an inorganic calcium salt.

• synthetische

  Calcium Sulfate may be prepared by the addition of a soluble calcium salt to a solution of sodium sulfate:
  CaCl2＋ Na2SO4→CaSO4＋ 2NaCl
  The product is generally a dihydrate although other hydrates are also known. The CAS numbers of these materials are: 7778-18-9 (anhydrite); 10034-76-1 (hemihydrate); 10101-41-4 (dihydrate).

• Industrielle Verwendung

  Calcium sulfate (CaSO₄?2H₂O) is the common blackboard chalk.

calcium sulfate Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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