Assertion: pure gypsum | /r/HasProperty | caso 4 ·2h 2 o
Facets:
Source sentences:
text: Calcium sulfate in the pure anhydrite form (no water) is 29.4 percent calcium (Ca) and 23.5 percent sulfur (S), while pure gypsum with its water associated in the molecular structure (CaSO 4 ·2H 2 O) is approximately 23.3 percent Ca and 18.5 percent S.