Silica Gel Desiccant Principle They appear as transparent, glassy,smooth and globose granules. They are nontoxic, milk-toast, harmless and litmusless, and they are the _disibledevent=90%≥ 34.0-35.0 Diemeter of Granules (mm) 2.0-4.0 Loss on Drying (%) at 180 ℃ 2.0MAX PH Value 5 Specific Resisfance (Ω.cm) 10 Apparent Density (g/ml) 0.73 Surface Area (㎡/g) 650 Pore Volume (ml/g) 0.36 Av.Pore Diameter(A) 22 Specific Heat (Kcal/kg.C) 0.22 Thermal Conductivity (Kcal/m.hr.C) 0.15 Chemical Parameters Chemical Elments Silican SiO2 (wt%) 99.7 Fe2O3(wt%) 0.008 Al2O3(wt%) 0.025 CaO(wt%) 0.01 Na2O(wt%) 0.05 Specifications 2~~1500g