| CAS No.: | 99400-01-8 |
|---|---|
| Formula: | Cao4s |
| EINECS: | / |
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Calcium sulfate, with the chemical formula CaSO4, is a common laboratory and industrial chemical. In the laboratory, calcium sulfate anhydrous is a desiccant, while calcium sulfate two hydrate is a common gypsum. But water containing calcium sulfate becomes permanently hard water.
Solubility Calcium sulfate has a relatively low solubility and is only slightly soluble in water, but soluble in acids, ammonium salt solutions and seawater. Calcium sulfate is neutral when dissolved in water.
Calcium sulfate has a wide range of uses:
1.Calcium sulfate dihydrate is gypsum, which can be used for chemical book fixation in surgery, production of dental molds and artificial bones, art creation and interior decoration;
2.Sometimes used as a desiccant in laboratories;
3.Food Grade calcium sulfate is a food additive used to precipitate tofu and bean curd from soy milk;
4.It is used as a soil conditioner in gardening.
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Testing Item
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Standard
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Result
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Color
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White
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White
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Appearance
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Powder
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Powder
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CaSO4 /%
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≥98.0
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99.5
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Pb /%
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≤0.0002
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0.0001
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As /%
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≤0.0002
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0.0001
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F /%
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≤0.0050
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0.0020
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Se /%
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≤0.0030
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0.0020
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250ºC water lose /%
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≤1.5
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0.725
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Note: When a user with special requirements for fineness, negotiated by the supply and demand sides
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