Traits:This productIt is a white uniform particle, the main composition is silica,It is made of high quality silica gel as raw material. Its main characteristic is that it can adsorb and retain the different components of the mixed material by the difference of retention time.，To achieve the purpose of separation and purification. According to its purity, it can be divided into industrial grade coarse pore column chromatography silica gel and reagent grade column chromatography silica gel.
Purpose:It is mainly used in the purification of petroleum products, the removal of aromatics or the separation of effective components of Chinese herbal medicine.Purification, preparation of high purity substances, etc.
Specification:
International practice:63-212 μm（70 × 230 mesh) 38-63 μm（230 / 400)
Domestic conventions:150-250 μm（60-100目）；75-150 μ m（100 / 200)；45-75 μm（200 / 300) (Can be processed into other specifications according to user needs ）
Indicators:
Project | Indicators | |
Industrial grade | Reagent level | |
Aperture Aо | 90-100 | 90-100 |
Pore volume ml/g | 0.85-1.0 | 0.85-1.0 |
Specific surface m2/g | 300-500 | 300-500 |
Drying weight loss% ≤ at 150 ℃ %≤ | 5 | 3 |
PH（100g/Laqueous suspension）ml/g | 6.0-8.0 | 6.0-7.0 |
Chloride（Cl） %≤ | —— | 0.02 |
Qualified rate of granularity %≥ | 60或80（according to customer requirements） | |
Packing:20 Kilogram/ composite bag；20 kg / carton or 20 kg /Cardboard bucket(lined with polyethylene bags) or Provide according to customer request.
Storage:It should be stored in a dry and ventilated warehouse to avoid mixed storage of moisture and volatile materials.
