What is a silicone sheet?

What is a silica gel plate?

'Silicone plate' in the chemical industry is just an abbreviation. The full name should be thin layer chromatography silica gel plate, also called high tear-resistant silica gel plate. It is made of high-purity thin layer chromatography silica gel (powder) sprayed with a certain amount of adhesive, and the surface is generally glass. It is popular abroad to use aluminum foil as the attachment surface, so what is a silica gel plate?

What is a silica gel plate?

1. It is made of high-purity thin layer chromatography silica gel (powder) sprayed with a certain amount of adhesive, and the plate surface is generally glass. This year, it is popular abroad to use aluminum foil as the bonding plate surface. The plate surface is required to be white, flat and delicate.

2. The main component is SiO2 nH2O, which has stable chemical properties and does not react with other acids and bases except strong alkali and hydrogen acid. Thin layer silica gel plates can be directly used for qualitative or quantitative analysis of various organic substances, and have been widely used in the identification of trace impurities and main components in drugs, pesticides, organic chemical products, grains and foods. Silica gel sheets are made of thin layer silica gel, thin layer silica gel sheets and thin layer silica gel sheets. It is made of TLC silica gel mixed with appropriate adhesives, coated on a glass substrate, with a specified pore volume, specific surface area and pore distribution. Separation of indigo, Sudan red and dimethyl yellow.

What are the characteristics of silica gel plates?

1. Good separation effect and high plate number.

2. Small spot size, convenient for series analysis.

3. Short separation time.

4. High sensitivity, clear spots and no diffusion.

5. It can be directly used for rapid separation of various types of organic substances-qualitative or quantitative analysis. It is widely used in the identification of trace impurities and main components in drugs, pesticides, organic chemical products, grains and foods.

6. How to make When preparing silica gel sheets, most of them are based on experience. We should pay attention to the falling speed of the liquid. When operating, apply it evenly and thinly on the slide, then pour a spoonful in the middle of the slide, let it slowly cover the entire plate surface, and then gently shake it with your hands. Remember that there must be no bubbles. Different types of silica gel have different gypsum contents, which is reflected in the different viscosities of silica gel. The higher the gypsum content, the more viscous it is. This bottle selling silicone has a logo. For example, silicone H is very loose, and silicone G generally has moderate viscosity.

7. According to the molding process, silicone sheets are made of thin layer silicone, thin layer silicone sheets and thin layer silicone sheets. It is made of TLC silicone mixed with an appropriate adhesive, coated on a glass substrate, with a specified pore volume, specific surface area and pore distribution.