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Column layer chromatography silica gel knowledge answered
 

1. What is silicone?

A: Silicone is a highly active adsorption material, belonging to the amorphous state. Its chemical molecular formula is mSiO2 · nH2O. It is insoluble in water and any solvent, non-toxic and odorless, with stable chemical properties, and does not react with any substance except strong alkalis and hydrofluoric acid. It is a natural and environmentally friendly material.

What is the difference between silicone and silicone?

A: Silica gel and silica gel are the same material, which have different names due to different regions. They are called silica gel in Taiwan, silica gel in Chinese Mainland, and silica gel in English.

3. Is silicone an environmentally friendly material?

A: Silicone is an environmentally friendly material that exists in the natural environment where we live. Silicone is a raw material used for processing silicon, which can be recycled, such as paper, copper, iron, glass, and can be reused after certain treatment. After it burns, dust returns to dust, and soil returns to soil.

4. Can silicone come in many colors? Is colored silicone toxic?

A: Column chromatography silica gel is basically colorless, and it is a non-toxic product. However, in the production of silica gel, there are misty and transparent forms due to different grades. Whether the sealing ring of a pressure cooker, a baby's pacifier, or colored silicone is toxic depends on the quality of the color glue.

5. The surface of silicone products will be very bright, will it be toxic?

A: The surface gloss of silicone is non-toxic unless it is made of a material that is not environmentally friendly after secondary processing.

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6. Will silicone leak water?

A: Silicone has strong waterproof properties and is not affected in water. For example, diving suits and plastic surgery materials are all silicone products.

What is the temperature range that silicone can withstand?

A: The temperature range that silicone can withstand is -40 ° C -230 ° C

8. What fields can silicone be used in?

A: Silicone is widely used in various fields, such as insulation and waterproofing materials, cables, and shockproof gaskets in the electronic technology industry; Keys and sealing waterproof edges in the communication industry; Bottles, nipples, and gums for baby products; Environmentally friendly tableware, cake molds, baking plates, ice grids, and protective equipment for the medical industry in the catering industry.

9. How to handle silicone waste?

A: After recycling, it can be decomposed and reduced to polysiloxane through specific treatment. The decomposed material is only used for mold making purposes, not for product production