ABSTRACT
— ß Hemihydrate (ßH.H.): microporous material obtained by partial dehydration of gypsum in air; formula: CaSO41/2H2O (pseudo-hexagonal).
— ß Hemihydrate (ßH.H.): microporous material obtained by partial dehydration of gypsum in air; formula: CaSO41/2H2O (pseudo-hexagonal).