After heating, the monoclinic gypsum is first converted into the orthorhombic form without loss of water. When the temperature reaches 120 C, it loses 75% of its water of crystallization giving the ...
Gypsum forms when the lake level was lowered during times of drought. The hydration water in gypsum was used in this study to reconstruct the changes in rainfall of the region. The panel on the ...
THE Department of Trade and Industry (DTI) will impose a provisional anti-dumping duty for four months on gypsum board imported from Thailand. “The DTI hereby imposes a provisional anti-dumping duty ...