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Molecular sieves are available in various types, each with distinct pore sizes and chemical compositions. The 3A, 4A, 5A, and 13X molecular sieves are named after their respective pore dimensions, which are determined by the composition of potassium, sodium, or calcium ions incorporated into the structure.
Calcium chloride desiccants are known for their fast adsorption speed and high adsorption capacity. They are also non-toxic, odorless, non-corrosive, and do not cause environmental pollution, making them suitable for use in various applications.
Silica gel is a granular, porous form of silicon dioxide, which is synthesized from sodium silicate. The beads of silica gel in a desiccant packet have a high surface area, due to their many tiny pores, which allows them to adsorb water molecules from the surrounding air. Silica gel is non-toxic, chemically inert, and does not react with most substances.
Desiccants are usually divided into two types: food use and industrial use. Food use is environmentally friendly desiccant. What kind of desiccants are the eco-friendly desiccants? What are the characteristics? Next, let me share with you.
When quicklime comes into contact with water, it will release a large amount of heat, forming calcium hydroxide with strong alkalinity, that is, slaked lime. Slaked lime can corrode the digestive tract, causing damage to the mouth, esophagus, or stomach ulcers.
Calcium chloride desiccant is different from other common desiccants. Other desiccants will become lumps after absorbing moisture, while calcium chloride desiccant has gelling agent added to it, so that calcium chloride desiccant will become gel . If it turns into a gel, it can prevent the water absorbed by the desiccant from flowing out, and prevent the desiccant from damaging the article.
Food desiccant is widely used in daily life. After using it, it can avoid the problem of food being damp, and it can also avoid the appearance of bad products caused by the presence of extra moisture in food. The following are the main reasons why desiccant is used in food packaging.
The composition of an oxygen absorber varies depending on the intended use, the water activity of the product that it is intended to preserve, and some other factors. Typically, modern oxygen absorber packets use a mixture of iron powder and sodium chloride. However, it often includes activated carbon because it can absorb some other gases and organic molecules. This helps to preserve the food further and remove odors.