... Benzene Calcium SulfonateProduct Introduction The synthetic calcium sulfonate with low base number is one of the series of petroleum additives developed ... ,mgKOH/g20—30SH/T0251Calcium,m%≥ 2.0GB/T17476,SH/T0270Sulfur,m%≥ 2.0GB/T17476Water Content,m%≤ 0.2GB/T260Machinery Impurities,m%≤ 0.1GB/T511Turbidity ...