项目

        一等品            合格品

主含量（SiO2％≥）%

         55%            45%-50%

CaO％≥

         47%            35%-45%

MgO%<

        0.02%             0.05%

白度（度）≥

     90                85

Fe2O3％≤

         0.1%              0.3%

Al2O3％≤

         0.3%              0.8%

灼失量

         0.52 %             0.8%

水分≤

         0.25%             0.3%

活化度≥

          95%              90%

PH

               9.0--9.8