| http://www.w3.org/ns/prov#value | - MgO CO2.12H2 O, (Mg6 Al2 (OH)16 CO3 4H2 O), MgO.Al2 O3.2SiO2.nH2 O, wherein n not is an integer and less than 2 or similar compounds; organic pH-buffering substances such as trishydroxymethylaminomethane or other similar, pharmaceutically acceptable pH-buffering substances.
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