This standard applies to natural gypsum ore to remove impurities, soil, and calcined and ground calcium sulfate (also known as calcined gypsum), which can be used as a coagulant in food processing. Molecular formula: CaSO4 1/2H2O Molecular weight: 136.14 (according to the international atomic weight in 1977)
GB 1892-1980 history
2016GB 1886.6-2016 National Food Safety Standard Food Additive Calcium Sulfate