How to avoid volatilization of chemical barrels

1. Choose the right chemical barrel
Material
High-density polyethylene (HDPE) chemical barrel: HDPE has good tolerance to a variety of chemicals, and its molecular structure is relatively tight, which can reduce the penetration and volatilization of chemicals. For example, for the storage of some organic solvents, HDPE chemical barrels are an ideal choice.
Fluoroplastic chemical barrels: Fluoroplastic has extremely low permeability and can effectively prevent the volatilization of chemicals. For some chemicals with strong volatility and high requirements for storage containers, such as some special fluorine-containing compounds, fluoroplastic chemical barrels can provide better sealing performance.
Structural design
Sealing cover design: Choose a chemical barrel with a screw cap, which can form a good seal with the barrel body through the tight engagement of the thread. Moreover, a high-quality sealing gasket, such as a fluororubber gasket, can be equipped inside the screw cap. It has good elasticity and chemical corrosion resistance, which can further enhance the sealing effect.
Barrel mouth design: The size and shape of the barrel mouth will also affect volatilization. Compared with the barrel mouth with a relatively large diameter, the volatilization area of ​​the chemical substance is smaller under the same sealing conditions, which can reduce the volatilization amount.
2. Correct operation method
Filling process
When filling chemical substances, try to avoid the chemical substances splashing onto the barrel mouth or barrel wall. Because the splashed chemical substances are easy to volatilize at the barrel mouth, increasing the volatilization loss. Special filling equipment, such as a filling tube with a diversion device, can be used to ensure that the chemical substances flow smoothly into the barrel.
After filling, the residual chemical substances around the barrel mouth should be cleaned up in time to prevent them from volatilizing.
Usage process
After each use of the chemical substances in the chemical barrel, the barrel cover should be closed immediately to reduce the contact time between the chemical substances and the outside air. For situations where chemical substances need to be taken frequently, you can consider using a sub-bottle, taking out an appropriate amount of chemical substances from the chemical barrel and putting them into the sub-bottle for use, which can reduce the number of times the chemical barrel is opened, thereby reducing volatilization.
3. Control of storage environment
Temperature control
Try to store chemical barrels in a low temperature environment. Because the increase in temperature will intensify the molecular movement of chemical substances, thereby increasing the volatilization rate. For example, for volatile organic solvents, if conditions permit, they can be stored in a warehouse with air conditioning or ventilation and cooling equipment, keeping the temperature at around 20℃ - 25℃, which can significantly reduce the volatilization rate.
Environmental pressure control
In some special cases, the volatilization of chemical barrels can be reduced by increasing the pressure of the storage environment. For example, in some industrial production processes, chemical barrels containing volatile chemicals are stored in a pressurized storage room so that the environmental pressure is slightly higher than the atmospheric pressure, which can reduce the volatilization rate of the chemicals. However, this method requires special equipment and strict safety measures and is generally used in industrial production.
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