... Nanometer(Super Dispersion) SmectiteNanometer montmorillonite belongs to smectite(including calcium,sodium,sodium-calcium,magnesium smectite),made from shelling,dispersing,purifying,grading and ... less than 25nm,the content of montmonrillonite is higher than 95%.With good dispersion properties,it is widely used as additive ... . Welcome to Shanghai Yuantai Chemical!Thank you Inorganic Bentonite Sodium