silica gel blue,white bead form,size 1--2mm,1--3mm,2--5mm supply ... , etc. Characteristcs:MF : mSiO2.nH2O CAS No.7631-86-9Color : white or blueSize : bead form or granular form, from 0.2 ... Size%98.6 min PH6.2—6.6 Bulk Density g/L700--810 Package: 25kg bag or 25kg drums, or as ... . It is trackless and virtually odorless, albeit expensive. Silica Gel white and Blue