Hi, I am Dr. Chandra Sekhar Biswas, working as senior scientist at Harind Chemicals, India. I am looking for colloidal nanosilica. I found here Silok®6651F3. I need to know the molecular weight of Silok®6651F3 but I did not found it. Could you please inform me the molecular weight of the same? Looking forward to your reply. Regards.