Silica gel desiccant is a kind of highly active adsorbent material, which is usually prepared by the reaction of sodium silicate with sulfuric acid and a series of post-treatment processes such as aging and acid bubbles. Silica gel is an amorphous material whose chemical formula is mSiO2.nH2o. It is insoluble in water and any solvent, non-toxic, tasteless, chemically stable, and does not react with any substance except alkali and hydrofluoric acid. The chemical composition and physical structure of silica gel determine that silica gel has many characteristics which are difficult to be replaced by other similar materials. Silica gel desiccant has high adsorption performance, good thermal stability, chemical stability, high mechanical strength and so on.
Commonly used desiccant silica gel has three colors: transparent, blue or orange. Among them, blue and orange silica gel can play a display role, blue gel contains trace cobalt chloride, after moisture absorption from blue to red, orange gel moisture absorption into dark green.
Use of silica gel desiccant
Silica gel desiccant is widely used in pharmaceuticals, machinery, optoelectronics, precision instruments, instruments, seeds, processed food, tea, all kinds of chemical fiber textiles, leather shoes, sports shoes and cultural relics files, cameras, arts and crafts and all the need for moisture-proof and mold-proof goods. The details are as follows:
Silica gel desiccant can be used for moisture-proof of bottled medicines and foodstuffs. Ensure the drying of contents and prevent the growth of all kinds of fungi.
Silica gel desiccant can be used as a general package desiccant. Such as bags, clothing, shoes, hats, leather, etc., to prevent goods in storage or transportation process due to dampness and affect product quality.
Silica gel desiccant can be conveniently placed in electronic products, instrumentation, household appliances, mechanical equipment and other products to prevent goods from damp and affect product quality.

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