Nanjing Huafeier Chemical Co., Ltd
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Calcium Sulphate

— inorganic salt, sulphate, CaSO4
Product Category: Sulphate
Sales Method: Export
Payment Term: T/T, L/C
Min. Order Unit Price

Product Detail

Product Attribute:

  • China (mainland) More >
  • 05/26/2011
  • 01/01/2011

Product Content Description:

Molecular formula: CaSO4. white powder, food grade
Calcium sulfate is a common laboratory and industrial
chemical. In the form of γ-anhydrite, it is used as a
desiccant. It is also used as a coagulant in products like
tofu.In the natural state, unrefined calcium sulfate is a
translucent, crystalline white rock. When sold as a
color-indicating variant under the name Drierite, it
appears blue or pink due to impregnation with cobalt
chloride, which functions as a moisture indicator. The
hemihydrateis better known as plaster of Paris, while the
dehydrate occurs naturally as gypsum. The anhydrous form
occurs naturally as β-anhydrite. Depending on the
method of calcination of calcium sulfate dihydrate,
specific hemihydrates are sometimes distinguished:
alpha-hemihydrate and beta-hemihydrate. They appear to
differ only in crystal size. Alpha-hemihydrate crystals are
more prismatic than beta-hemihydrate crystals and, when
mixed with water, form a much stronger and harder
superstructure.

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