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This section has been established to help educate industry, government, and the public on what TLVs and BEIs are, and how TLVs and BEIs may best be used.
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CALCIUM SULFATE
CALCIUM SULFATE
CAS number: 7778-18-9, the anhydrite (CaSO4)
10034-76-1, the hemihydrate (CaSO4 · ½H2O)
10101-41-4, the dihydrate (CaSO4 · 2H2O)
13397-24-5, gypsum (CaSO4 · 2H2O)
Synonyms: Anhydrous calcium sulfate; Anhydrous sulfate of lime; Gypsum, Plaster of Paris; Drierite®
Molecular formula: CaSO4
TLV–TWA 10 mg/m3, Inhalable particulate mass
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