Question 1

Is silica gel safe for food packaging applications?

Accepted Answer

Silica Gel (SiO₂) is non-toxic, odorless and non-reactive with food. CEMACOSG's silica gel is HACCP-compliant and suitable for indirect contact with dry foods such as biscuits, confectionery and agricultural products. Non-woven or food-grade Tyvek packaging must be specified.

Question 2

Can silica gel be reused after it reaches saturation?

Accepted Answer

Yes. Silica gel can be regenerated by oven-drying at 120–150°C for 1–2 hours. After regeneration, absorption capacity recovers to approximately 80–90% of the original level. In industrial practice, silica gel is typically reused 2–3 cycles before replacement.

Question 3

How do I determine the correct silica gel weight for my packaging?

Accepted Answer

A general guideline is 1g of silica gel per 30–50cm³ of sealed container volume. For example, a shoebox (~3,000cm³) requires 60–100g; a small electronics tray (~500cm³) needs 10–20g. Contact CEMACOSG's technical team for an industry-specific sizing chart.

Question 4

What is the difference between silica gel and clay desiccant? Which should I choose?

Accepted Answer

Silica gel adsorbs moisture faster and can be regenerated by heat; preferred for electronics, cosmetics and pharmaceuticals. Montmorillonite clay is more stable at low temperatures and is an eco-friendly option for containers, timber and long-term warehousing. Clay cannot be regenerated.

Question 5

Can CEMACOSG print a custom logo on silica gel packaging?

Accepted Answer

Yes. CEMACOSG provides custom logo, brand name, QR code and safety warning printing on Tyvek and non-woven packaging. The minimum order quantity for custom printing is typically 5,000 units. Contact our sales team to request a sample.

Question 6

What is the shelf life of unused silica gel packets?

Accepted Answer

Silica gel in sealed original cartons retains full absorption capacity for 2–3 years when stored in a cool, dry environment. Once the carton is opened and packets are exposed to ambient air, they should be used within 3–6 months to maintain rated performance.

Silica Gel Desiccant · Silicon Dioxide Packets 1g–1kg, Tyvek & Non-Woven

15 Silica Gel SKUs

Silica Gel 1g — Non-woven — Red

Silica Gel 2g — Non-woven — White

Silica Gel 3g — Non-woven w/ Logo — Blue

Silica Gel 3g — Non-woven — Black

Silica Gel 5g — Non-woven — Red

Silica Gel 5g — OPP Film — Blue

Silica Gel 5g — Non-woven JP Print — Blue

Silica Gel 10g — OPP Film — Blue

Silica Gel 10g — Non-woven — Blue

Silica Gel 20g — Non-woven — Blue

Silica Gel 50g — Tyvek w/ Logo — Blue

Silica Gel 100g — Non-woven — Blue

Silica Gel 500g — Non-woven w/ Hook

Silica Gel 500g x2 — Non-woven w/ Strap

Silica Gel 1000g x4 — Non-woven w/ Hook

Frequently asked questions

Industrial desiccants for export