How Much Water Does Calcined Gypsum Contain?

• Published in: Angewandte Chemie (International ed.) Vol. 48; no. 19; pp. 3520 - 3524
• Main Authors: Weiss, Horst, Bräu, Michael F
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley-VCH Verlag 01.01.2009; WILEY‐VCH Verlag
• Subjects: bassanite; calcium sulfate; gypsum; structure elucidation; twinning

Ordered water: Gypsum has been used for construction for millennia. The structure and water content of calcined gypsum, CaSO₄·0.5 H₂O, has been under discussion until now: single-crystal structure analysis (see picture: S yellow, Ca gray, O blue, H red) provides an ordered model that is confirmed by...