执行标准QB/T2002-02-X1CaCO3含量≥98%PH值9.0-10.5105℃下挥发分含量≤0.3%盐酸不溶物≤0.1%吸油值≥65g/100gFe≤0.05%Mn≤0.005%筛余400目筛≤0.001%沉体≥2.5ml/g白度≥96度活化度≥96%)