The components of desiccant are as follows:
The main components of desiccant are calcium sulfate, barium oxide, phosphorus pentoxide, calcium chloride, magnesium perchlorate, potassium hydroxide, alumina, concentrated sulfuric acid, silica gel, sodium hydroxide, calcium oxide, activated anhydrous copper sulfate, magnesium sulfate, sodium sulfate, potassium carbonate and sodium metal.
When using perchlorate, carbon, sulfur, phosphorus and all organic matter can not be in contact with it, otherwise it will explode violently and cause danger. Desiccant, a substance that removes water from a moist substance. Desiccant is often divided into chemical desiccant, such as calcium sulfate and calcium chloride, drying by combining with water to produce hydrates.
Physical desiccants, such as silica gel and activated alumina, dry by physically adsorbing water. The control of moisture is closely related to product yield. At the right temperature and humidity, bacteria and molds in food multiply at an alarming rate. This causes food to spoil, resulting in moisture and color change. Electronic products will also cause metal oxidation due to high humidity, resulting in defective products. The use of desiccant is to avoid the occurrence of defective products caused by excess moisture.
Application of desiccant:
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 are often damp and deteriorated due to high temperature during transportation. Desiccant can effectively remove moisture and prevent moisture, so that the quality of goods can be guaranteed. Desiccant is used for moisture-proofing of bottled medicine and food. Ensure the dryness of the content items and prevent the growth of various sundry molds.
Desiccant can be used as general packaging desiccant for moisture prevention. Desiccant can be conveniently placed in all kinds of items, such as instruments and meters, electronic products, leather, shoes, clothing, food, medicines and household appliances, etc., inside the package to prevent the items from moisture mold or rust. Acid desiccant, such as concentrated sulfuric acid and phosphorus pentoxide, is used to dry acidic or neutral gas. Among them, concentrated sulfuric acid can not dry the strong reducing acidic gas of hydrogen sulfide, hydrogen bromide and hydrogen iodide.
Precautions for the use of desiccant
First, it can only work in the closed space
Desiccant in the actual use process, it must play an effective role in the closed space, that is to say, it must ensure that the whole space is absolutely airtight. If the space can not be guaranteed airtight, then the desiccant will never be able to absorb the outside air.
Second, unsealed use how much to take
Desiccant once unsealed use, in the process of use, it is recommended to use how much to take how much, because if you want to unseal the use of words, as soon as possible, all the desiccant all to the product inside, and immediately do a good job of sealing the product.