Column chromatography silica gel is mainly used for refining petroleum products, removing aromatics or separation and purification of effective components of Chinese herbal medicine, and preparation of high-purity substances
Column chromatography silica gel is a porous material, which has the cross chain structure of siloxane in the molecule. At the same time, there are a lot of siloxane groups on the surface of the particles, which have different adsorption retention time for different substances, so as to achieve the purpose of separation and purification.
The raw material of silica gel for column chromatography is silica gel with certain pore structure and low impurity content, which is processed by special process according to the needs of customers and the characteristics of silica gel for column chromatography. In the production process of SCS column chromatography silica gel, the hierarchical frequency conversion technology is used to reduce the presence of fine particles, ensure the uniformity of screening particle size, reduce the column resistance in the process of separation and purification, and ensure the uniform flow rate.
Shape:
Silica gel for column chromatography is a white powder particle, non-toxic, colorless and tasteless, and insoluble in water and organic solvents.
Purpose:
Column chromatography silica gel is mainly used for refining petroleum products, removing aromatics or separation and purification of effective components of Chinese herbal medicine, preparation of high-purity substances, etc. It can also be used as catalyst carrier to remove impurities in waste oil.
Specifications:
Reference technical indicators:
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项目 |
指标 |
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|
A类 |
B类 |
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|
型号 |
ZCX--I |
ZCX--II |
ZCX--III |
ZCX--I |
ZCX--II |
ZCX--III |
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|
氯化物（Cl）%≤ |
0.02 |
-- |
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|
铁（Fe）%≤ |
0.02 |
-- |
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|
PH(100g/L水悬浮液) |
6.0-7.0 |
6.0-8.0 |
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铅(Pb)%≤ |
0.001 |
-- |
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|
砷(As)%≤ |
0.0003 |
-- |
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重金属(以Pb计)%≤ |
0.003 |
-- |
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加热减量%≤ |
3.0 |
5.0 |
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比表面m2/g |
≥550 |
300-550 |
200-300 |
≥550 |
300-550 |
200-300 |
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孔容ml/g |
≤0.70 |
0.70-0.90 |
≥0.85 |
≤0.70 |
0.70-0.90 |
≥0.85 |
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|
粒度合格率%≥ |
＞150μm |
75-150μm |
50-75μm |
＜50μm |
＞150μm |
75-150μm |
50-75μm |
＜50μm |
|
80 |
80 |
60 |
60 |
80 |
80 |
60 |
60 |
|
|
包装 |
10kg/箱、20kg/箱或根据用户要求 |
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Note: 1. Class A is reagent grade, and class B is industrial grade.
2. Packaging and specifications can be according to the user's requirements.
3. Technical indicators can be based on user requirements.
