ʻO ka Calcium Sulphate Dihydrate he aniani kolamu kala ʻole a i ʻole ka pauka crystalloid keʻokeʻo. 128 °C lilo 1.5 gesso i ka hapalua hydrate a me 163 °C maluna me ka wai ole. ʻO ka mānoanoa pili 2.32, helu heheʻe °C (1450 me ka ʻole o ka wai). Hiki ke hoʻoheheʻe ʻia i loko o ka wai wela hiki ke hoʻoheheʻe ʻia i loko o nā ʻawaʻawa a me ka hapa nui o nā mea hoʻoheheʻe organik.