Color-changing silica gel: commonly used to keep instruments and balances dry. It turns red after absorbing water. Failed silica gel can be dried and regenerated for further use. Can dry amine, NH3, O2, N2 and so on.
Anhydrous magnesium sulfate: strong drying ability, after absorbing water to generate MgSO4.7H2O. absorb water quickly, efficiently and cheaply, often used to dry organic reagents.
Concentrated H2SO4: strong water absorption, commonly used to remove water from gases that do not react with H2SO4. For example, it is often used as a desiccant for H2, O2, CO, SO2, N2, HCl, CH4, CO2, Cl2 and other gases.
Anhydrous Calcium Chloride: It is widely used because of its low price and strong drying ability. The drying speed is fast, can be regenerated, dehydration temperature of 473 K. Usually used to fill the dryer and drying tower, drying drugs and a variety of gases. It can not be used to dry ammonia, alcohol, amine, acyl, ketone, aldehyde, ester and so on.
Physical adsorption: desiccant is suitable for preventing instruments, meters, electrical equipment, medicines, food, textiles and other kinds of packaged goods from moisture, desiccant is also widely used in sea transportation, because the goods in the process of transportation often due to the temperature of the moisture and deterioration, the desiccant can be used to effectively remove the moisture moisture to prevent moisture, so that the quality of the goods to be guaranteed.
1, desiccant for bottled medicine, food moisture. Ensure the dryness of the content items and prevent the growth of various sundry molds.
2, desiccant can be used as general packaging desiccant for moisture prevention.
3, desiccant can be conveniently placed in all kinds of items (such as instruments, electronic products, leather, shoes, clothing, food, medicine and household appliances, etc.) within the package, in order to prevent the items from moisture mold or rust.