Foshan Weller Moisture Proof Technology Co., Ltd. is one of the most experienced manufacturers and suppliers of silica gel packets for food storage in China. If you're going to wholesale high quality silica gel packets for food storage, welcome to get free sample and discount information from our factory. We also accept customized orders.

China Silica Gel Packets For Food Storage manufacturers and suppliers since 2009, with our own factory. Accept wholesale, OEM, ODM orders. Provide custom solutions.

Silica Gel Packets For Food Storage Manufacturers

Noted: We can custom desiccant for specific applications.

Specification	Details
Product Type	Silica Gel Packets for Food Storage
Material	Silica Gel (Amorphous Silicon Dioxide)
Packet Weight	1g, 2g, 5g, 10g, 20g, etc., depending on food storage size requirements
Shape	Small Sachets/Pouches
Packaging Material	Non-woven fabric, Tyvek paper, or food-grade breathable materials
Adsorption Capacity	30%-40% of its weight in moisture
Usage	Control moisture to protect food from spoilage (e.g., mold, bacteria)
Application	Use in sealed food storage containers, jars, or packaging
Safety	Non-toxic and FDA-approved for food use
Shelf Life	1-2 years (if stored in airtight, dry conditions)
Operating Temperature	-40°C to 200°C
Reactivation	Possible via drying in an oven (100-120°C)

Maximum Absorption Rate

Under optimal conditions of high relative humidity (RH) (e.g., 60-90%) and at room temperature (25°C), high-quality silica gel packets for food storage can adsorb moisture equivalent to approximately 30-40% of its own weight. This means a 10-gram packet can absorb roughly 3 to 4 grams of water vapor before becoming saturated.

Performance at Different Humidity Levels

At a low RH of 20%, it can still adsorb about 10-12% of its weight.
At a moderate RH of 50%, its capacity increases to approximately 20-25%. This makes it effective across a wide range of storage conditions.

Comparison with Other Desiccants

1. Montmorillonite Clay

A common desiccant found in food products, its saturation capacity is typically around 15-20% of its weight, which is lower than silica gel.

2. Calcium Oxide (Quicklime)

While it has a very high capacity (over 30%), its reaction with water is chemical, irreversible, and exothermic (releases heat), making it less safe and stable for general food storage, compared to silica gel's physical adsorption.

Effect of Temperature

Moisture adsorption is an exothermic process. Higher temperatures can slightly reduce its equilibrium capacity, but within the normal range of food storage (0°C to 50°C), this effect is minimal. It does not impede its functionality.

Regeneration Capability

A key advantage of silica gel packets for food storage is that it is reusable. When saturated, it can be regenerated by heating it in an oven at 110°C - 120°C for 1-2 hours. This process drives off the adsorbed water, restoring its drying capacity. It can be repeated many times.

Applications of Silica Gel Packets For Food Storage

Food Category	Specific Examples
Dried Goods	Mushrooms, seaweed, wood ear fungus, dried beans, instant soups, powdered drinks
Grains & Flours	Rice, wheat, oats, quinoa, pasta, all-purpose flour, bread flour, cornmeal
Spices & Seasonings	Salt (to prevent clumping), garlic powder, onion powder, chili flakes, dried herbs, peppercorns
Baked Goods & Snacks	Cookies, crackers, chips, pretzels, cereal, pet kibble
Nuts & Seeds	Almonds, walnuts, peanuts, sunflower seeds, pumpkin seeds
Tea & Coffee	Loose-leaf tea, tea bags, whole coffee beans, ground coffee
Sugar & Sweeteners	Granulated sugar, brown sugar (to maintain softness)

Recommended Dosage of Silica Gel Packets For Food Storage

Container Volume (Liters - L)	Recommended Silica Gel (Grams - g)	Common Application Examples
Up to 0.5 L	1 - 2 grams	Small spice jars, tiny tea canisters, small bags of herbs
0.5 L - 2 L	3 - 5 grams	Coffee canisters, medium tea tins, small snack bags
2 L - 10 L	10 - 20 grams	Bags of rice or flour, large containers of dry pasta, cereal boxes
10 L - 20 L	20 - 50 grams	Large cereal bins, pet food bags, bulk food storage buckets
20 L - 50 L	50 - 100 grams	Large plastic storage totes, small pantry cabinets
50 L+ or Space	100 grams +	Protecting the air volume inside cupboards, wardrobes, or suitcases

Hot Tags: silica gel packets for food storage, China, manufacturers, suppliers, factory, customized, wholesale, discount, free sample, Crystal cat litter, silica gel for drying flowers, silica gel for camera equipment, Anti Mold Bags, silica gel for diodes storage, silica gel for moisture absorption

About Us

Foshan Weller Moisture-Proof Technology Co., Ltd. was established in 2009. We are a professional manufacturer and supplier in China, with an factory of over 8,000 square meters.

Product Range	moisture-proof, mildew-proof, odor-proof and rust-proof products.
Applications	designed for residential, commercial and industrial use. used for product packaging, transportation, and warehousing in different industries.
Service	Accept wholesale, OEM, ODM orders; Provide custom solutions.
Certifications	SGS, RoHS, REACH, FDA, DMF; SIMT,MIL-D-3464E, DIN55473, ISO9001, ISO14001, BSCI.

Product Details and Summary

Product Type	silica gel desiccant (moisture absorbing material)
Classification	1. non-indicating silica gel 2. indicating silica gel (1) blue indicating silica gel (blue to pink; containing cobalt chloride) (2) orange indicating silica gel (orange to green; cobalt free and environmentally friendly)
Indicator Function	You can choose silica gel with color indication function, to achieve a more convenient reminder function.
Main Components	silicon dioxide (SiO₂); Content ≥ 98%
Appearance	granular, spherical, powdered, beads crystals, sand, etc.
Colors	transparent, translucent, white, blue, or orange
Particle Size	1-3mm, 2-4mm, 3-5mm; or custom sizes
Bulk Density	approximately 700-800 kg/m³
Surface Area	700-800 m²/g
Pore Volume	0.4-0.8 cm³/g
Applicable Humidity Level	20%-90% RH
Operating Temperature Range	-40 ℃ to 200 ℃ (long-term stability)
Maximum Moisture Absorption Rate	30%-40% of its own weight
Physical Properties	stable internal structure. no expansion or liquefaction. not easily crushed. dust-free.
pH	4-8
Chemical Properties	chemically inert; It will not chemically react with the inside products.
Human-Friendly Feature	odorless and non-toxic. It meets food grade standards.
Environmentally Friendly Feature	using packaging paper and materials that are biodegradable within two years. It can be discarded for use as fertilizer.
Regeneration Temperature	80℃-150 ℃ ( It can be reused after heating for 2-4 hours.)
Packaging Material	breathable material with strong sealing properties. You can customize packaging materials according to your needs.
Printing	You can custom printed text, pictures, logo for better brand images.
Packaging Capacity	1g, 2g, 5g, 10g, 50g, 100g, 500g, 1000g; or custom capacity
Storage	It should be tightly sealed and stored in a cool, dry place; away from direct sunlight and chemical pollution.
Certifications	SGS, RoHS, REACH, FDA, DMF; SIMT,MIL-D-3464E, DIN55473, ISO9001, ISO14001, BSCI.