silica gel

Description

4. General Description White grains of homogeneous size. Chief ingredient is silicon ***** high purity, secure and ***** be used to separate and refine mixed components because different components have different absorption duration on this silica gel. Use For refinement of petrol products, removal of aromatic hydrocarbon material, seperation and refinement of traditional Chinese herbal medicine components, preparation of high purity substance, etc. Technical Norms ITEM Specifications TypeI TypeII Type ZCX*1 ZCX*2 ZCX*3 ZCX*1 ZCX*2 ZCX*3 Chlorides(C1), %≤ 0.*2 Iron(Fe)ï&frac*4;Œ%≤ 0.*2 PH ï&frac*4;ˆ**0g/L water suspensionï&frac*4;‰ï&frac*4;ŒmL/g 6.**7.0 6.**8.0 Lead ï&frac*4;ˆPbï&frac*4;‰, %≤ 0.**1 arsenicï&frac*4;ˆAsï&frac*4;‰%≤ 0.***3 Heavy metalsï&frac*4;ˆby Pbï&frac*4;‰, %≤ 0.**3 Loss on heating%≤ 3.0 5.0 Specific surface m2/g ≥**0 ******0 ******0 ≥**0 ******0 ******0 Pore volume ml/g ≤0.*0 0.***0.*0 ≥0.*5 ≤0.*0 0.***0.*0 ≥0.*5 Granularity eligibility %≥ >**0µ *****0µ ****5µ <*0µ *0 *0 *0 *0 >**0µ *****0µ ****5µ <*0µ *0 *0 *0 *0 Granularity mm To be decided upon buyer’s requirements