WE FORMULATED CHINA NATIONAL STANDARD FOR SILICA GEL
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DESCRIPTION
Special Silica Gel _ Column Chromatography Silica Gel
Detail

Properties

Siica gel of column chromatography is white beads or irregular particles. its major component is SiO2; . nH20, non-toxic and tasteless, stable in chemical properties, it doesn'l react with any other substances except strong acid and hydrofluoric acid, its insoluble in water and organic solvent. silica gel of column chromatography is porous material and has different adsorption and retention time of diferent polar substanes, so it can be used to separate and purify.


Application

This product is mainly used for removal and refined aromatic hydrocarbons from petroleum products, selective adsorption and separation of substances of different polarty; It can be used as catalyst carrier and chromatography tam body and also can be used for the separation and purification of the active ingredients of Chinese hertal medicine


Technical Specifications


             

Items

parameters
Ordinery Type
Optimized Type
Ⅰ-ZCX-1Ⅰ-ZCX-2Ⅰ-ZCX-3Ⅰ-ZCX-4Ⅱ-ZCX-1Ⅱ-ZCX-2Ⅱ-ZCX-3Ⅱ-ZCX-4
CL    w/%    ≤--------0.020.020.020.02
Fe      w/%   ≤--------0.020.020.020.02
PH(100g/L water supension)6.0-8.06.0-8.06.0-8.06.0-8.06.0-7.06.0-7.06.0-7.06.0-7.0
Pb   mg/kg   ≤--------3333
As   mg/kg   ≤--------3333
Heavy metal(Pb) mg/kg   ≤--------30303030
Pore diameter    A20-3550-8080-120>12020-3550-8080-120>120
Pore   volume   mL/g0.35-0.450.5-0.750.8-1.1>1.10.35-0.450.5-0.750.8-1.1>1.1
Specific surface area   m²/g≥600450-600320-450<350≥600450-600320-450<350
150℃ dry weight loss   w/% ≤55553333

     Qualified size w/%   ≥

>150μm75-150μm50-75μm<50μm
80806060
Granularity   μm

30-50μm、50-75μm、75-150μm、150-300μm、250-600μm

It can also be processed accorfing to the particle size of the agreement.


Packaging: packed in two-layer plastic bags with cartons outside.Specs is 1kg,5kg,20kg/carton or as per required.


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