SILICA GEL for Moisture Control
Absorbers | Moisture Absorber | Silica gel packets
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Thanks to its versatility, reliability and safety, silica gel is widely used in industrial, logistics, pharmaceutical and food sectors, ensuring product protection from origin to final destination.
What is silica gel? – Basic properties
Silica gel packets contain silicon dioxide in a translucent granular form. It has a high porosity allowing it to absorb excess moisture in confined spaces.
Depending on the conditions of relative humidity and temperature to which silica gel is exposed, is more or less able to absorb moisture. Thus, at high temperatures the absorption capacity decreases.
Silica packets are desiccant bags widely used to protect products from damage by moisture, during transport and during storage thereof. With the introduction of desiccant silica gel within the packaging prevents possible degradation or deterioration of those likely to have changes in the presence of ambient moisture products.
Silica gel sachets are definitely an ideal place to ensure the quality of goods during shipping or stockpiles in warehouses, can guarantee the condition of the product upon arrival at destination or after their stay in stock product.
Silica gel is a non-toxic and non-corrosive drying agent, used for many applications in several sectors.
What is silica gel used for?
Silica gel is mainly used to prevent damage caused by moisture, both during transport processes and long-term storage. Its function is to maintain a dry and stable environment inside packaging or enclosed spaces.
Its most common uses include:
- Prevention of oxidation and corrosion
- Protection against mould and condensation
- Preservation of sensitive products
- Stabilisation of environmental conditions in sealed packaging
To ensure its effectiveness, silica gel must always be used in confined spaces, as it would quickly become saturated in open environments.
Silica gel applications by sector
Food industry
It can be used in indirect or direct contact with food by means of special bags that comply with FDA regulations, helping to preserve freshness and quality during transport and storage.
Pharmaceutical industry
It protects active ingredients, medicines and medical devices against moisture, ensuring stability and safety.
Technology and electronics
It prevents condensation in electronic components, optical instrumentation and sensitive technical equipment.
Logistics and export
Widely used in international shipments and long-term storage, where climatic changes can compromise the goods.
Desiccant silica gel is widely used for export, transport or storage of food or pharmaceutical products, as there is the possibility of placing the Silica Gel in direct contact with food or active ingredients using bags that meet the requirements of FDA (with bags Tyvek) type.
Find more information about applications of silica gel packets in our blog post: Why silica gel.
Specifications
Absorption capacity silica gel: 23 ± 2% of its own weight at an ambient temperature of 23 ° C and relative humidity of 40%.
Desiccant material: amorphous silica dioxide. Silica gel can be used with a substance that changes color, can recognize when the bag can no longer absorb moisture and, therefore, must be replaced (orange = active / green = exhausted).
Principal chemical and physical characteristics of desiccant silica gel:
Desiccant packs. Silica gel sachets. Supplies
Silica gel is supplied in desiccant bags and bags micros (both single, in chains or panels), capsules or bulk.
SILICA GEL BAGS
It is also possible to place a humidity indicator spot in each of the desiccant bag to check the saturation of the product inside the bag. The stain is green when the silica gel is active and brown when the desiccant is saturated.
SILICA MICRO BAGS
The same silica gel sachets but small formats, according to the following table:
The MICRO dessicant packs format can also be supplied in rolls or chains, depending on customer needs.
Another option is to supply the desiccant silica gel ready to be in direct contact with food or pharmaceutical ingredients, in compliance with FDA regulations. In this case the silica is bagged in Tyvek grade material (bag calling Class B).
SILICA CAPSULES
A presentation format and product supply low weight, useful for small spaces. Silica capsules are available in different sizes and weights, according to the following table:
Silica gel in capsules allows placement in plastic containers such as bottles or cans, allowing save space without losing absorbent capacity. One face of the capsule is moisture absorbent tissue product while the rest is polypropylene.
BULK
white and silica gel orange. The white product indicates no moisture absorption, whereas the orange product changes color when saturated with moisture. Silica comes in boxes of 25 kg of the product, with the following granulometry:
- Bulk Orange 2-5 mm: Change from orange (active) to green (saturated)
- Orange bulk 1.5 to 2 mm: Change color orange (active) to transparent (saturated)
- Bulk White 2-4 mm: No color change
You can contact us the suitable format for your needs.
You can view other type of drying agent, molecular sieve in our Absorbers section.
