执行标准QB/T2004-02CaCO3含量≥98%PH值9.0-10.5105℃下挥发分含量≤0.4%盐酸不溶物≤0.1%沉体≥2.6ml/gFe≤0.04%Mn≤0.004%筛余125um≤0.002%45um≤0.02%白度≥95.5度吸油值≤75g/100g活化度≥90%)