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China, Chinese Chromatographic Silica Gel CAS 112926-00-8 Column Chromatography Silica Gel1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Chemical Auxiliary CatalystDesiccant SorbentChromatographic Silica Gel112926-00-8
Ningbo Surest Chemical Co., Ltd.
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Product Description Product Description NameSilica gelMolecular FormulaSiO2Molecular Weight60.08CAS Registry Number112926-00-8PropertiesDensity2.6Melting point1610 oC Main Uses:Chromatographic silica gel is a white, uniform particle primarily composed of silicon dioxide, processed from high-quality silica gel. Its main characteristic is that it can achieve separation and purification by utilizing the differences in adsorption retention time of different components in mixed substances. Depending on its purity, it is further classified into industrial-grade coarse-pore column chromatography silica gel and reagent-grade column chromatography silica gel.The working principle of chromatography silica gel is based on the different adsorption forces of substances on silica gel, resulting in separation. Generally, substances with stronger polarity are easily adsorbed by silica gel, while those with weaker polarity are less easily adsorbed. The entire chromatography process involves adsorption, desorption, re-adsorption, and re-desorption.Chromatographic silica gel is a porous silica material that has a wide range of applications in various fields due to its high specific surface area, chemical stability, and controllable pore structure. The following is a detailed classification of its core application scenarios:Chromatographic separation (core function)1. Petroleum refiningUsed to remove aromatic compounds from petroleum products, improve oil purity, and play a key role in the refining process of lubricating oil and aviation fuel.2. Purification of Chinese herbal medicineBy using column chromatography technology to separate the active ingredients of herbs such as Epimedium, laboratory grade silica gel can be purified to a monomer purity of 99.8% with a yield of 7.4%.3. Preparation of high-purity substancesIn organic synthesis, the separation efficiency of intermediates, such as the removal of isomers of small nucleic acid derivatives, reached 98.5%.4. Separation principleBased on polarity difference adsorption: polar substances (such as alcohols) are more easily retained by silica gel, while non-polar substances (such as alkanes) are preferentially eluted, and separation is achieved through adsorption desorption cycles.Routine laboratory use1. Physical desiccant2. Thin layer analysis3. Adsorption treatmentReference SpecificationItemsSpecificationAppearanceWhite powderSize40-63 μmQualified Size Ratio,%,≥80 Average Pore Diameter(?)55-65Specific Surface Area(m2/g)420-550Pore Volume(ml/g)0.65-0.85PH(100g/L in 10% aqueous suspension)6.5-8.0Chloride,%,≤0.02 Ferric salts,%,≤0.02 Lost weight heated 150oC,%≤5.0 SiO2 %,≥98.5 Detailed Photos FAQQuestion 1: Can I get samples?Answer: Yes,you can get free samples of our most products,while the courier cost will be borne by the buyers.Question 2: What's your MOQ?Answer: For a express delivery order,the MOQ is usually 100 g~1 kg;for an air transport order or sea delivery order ,the MOQ is usually 25 kgs.Question 3: What's your delivery time?Answer: Orders shipped by express delivery,the delivery time is usually 5~7 working days;Orders shipped by air transport,usually around 7~10 working days; Orders shipped by sea , usually around 2~3 working weeks.Question 4: What are the different payment methods?Answer: We usually accept T/T, L/C and Western Union.Question 5: How do you treat quality complaint?We take quality very seriously, it is one of the founding principles of our business. If the quality problem actually exists, we will replace with qualified goods or refund the money.
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