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

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

Desiccant Silica Gel Manufacturers

This desiccant silica gel is a highly active adsorption material. It can quickly absorb moisture in the air, thereby preventing products from getting damp, mildewing and oxidation. This desiccant is an ideal moisture-proof solution. It is suitable for product packaging, transportation and warehousing in various industries.

Noted: We can custom desiccant for specific application.

Specification/Parameter	Description
Product Name	Desiccant Silica Gel
Material	Silicon dioxide (SiO₂), amorphous and porous
Shape	Spherical beads, granules, or irregular particles
Color	Transparent, white, blue or orange
Size	1-3mm, 2-4mm, 3-5mm, 4-8mm; or custom sizes
Moisture Absorption Capacity	Up to 30-40% of its weight (depending on relative humidity)
Relative Humidity Range	It operates effectively at 20%-90% relative humidity.
pH Value	Neutral to slightly acidic (pH 4-8)
Regeneration Temperature	100°C-120°C (212°F-248°F) for drying and reuse
Storage Capacity	It retains a significant portion of its moisture-absorbing ability for months.
Shelf Life	1-2 years (when sealed and stored in a dry environment)

Product Features

1. Highly efficient moisture absorption. Its moisture absorption rate is as high as 40% (25℃, RH=90%)

2. Comply with international safety standards such as FDA and EU. Non-toxic and odorless. It does not contain chloride or corrosive ingredients. It can directly contact food and medicine.

3. High and low temperature resistance. Stable performance. Not easy to decompose or leak.

4. Regenerable after dehydration. Reusable for many times. Economical and environmentally friendly.

5. You can select desiccant silica gel with color indication function, such as blue to pink, orange to green. Intuitive display of moisture absorption status. Convenient for timely replacement or regeneration.

Moisture Absorption Rate (Weight-Based)

Below are standardized test data (at 25°C/77°F) under varying humidity conditions:

Relative Humidity (RH)	Moisture Absorption Rate	State of Desiccant Silica Gel
20% RH	6%-8%	partial saturation
40% RH	12%-15%	moderate absorption
60% RH	20%-23%	high absorption
80% RH	28%-32%	near full capacity
90% RH	35%-40%	maximum saturation

Notes:

At RH > 90%, this desiccant silica gel can absorb up to 40% of its weight in moisture.

Applicable Scenarios and Recommended Dosage

Application Scenario	Description	Recommended Usage of Desiccant Silica Gel
Electronics	Prevent circuit boards, precision instruments, etc. from getting damp and oxidized (such as cameras, mobile phones, hard drives, etc.).	Use 500g-1kg per cubic meter of space; or place 5-10g packets in small equipment.
Medicines and Food	Keep medicines dry; Extend the shelf life of food (such as health products, dry food, pet food).	Place 10-20g per liter of container; or add 1%-2% of the packaging volume.
Clothing and Shoes	Mildew and moisture resistant; especially suitable for moisture-sensitive materials, such as leather and wool, etc.	Place 50-100g on each layer of the wardrobe; place 10-20g for each pair of shoes in the shoe box.
Warehousing and Transportation	Protect shipping containers and logistics goods from moisture damage (such as furniture, machinery equipment, etc.)	Use 1-2kg per cubic meter of container; or configure at 0.5%-1% of the value of the goods.
Home Moisture Proofing	Used in wet areas such as study rooms, basements, cabinets, etc.	For a small space (such as a drawer), place 20-50g; for a large space (10㎡ room), place 200-500g.
Automobile and Precision Instruments	Prevent fogging of car windows, rusting of tools, or condensation inside optical instruments such as telescopes.	Place 100-200g (in multiple packages) in the car; place 20-50g in the instrument box.
Document Archive	Protect important paper items such as documents, stamps, photos, etc.	Place 50-100g in each standard document box (30L)
Military and Aerospace	Humidity control in demanding environments (e.g. ammunition depots, satellite components,etc.)	Calculated based on the volume of the sealed space, it is usually 2-5kg/m³.

Dosage Adjustment Factors

Many factors, such environmental humidity, sealing, desiccant replacement frequency, etc. will affect the actual dosage. In humid areas, it is recommended to increase by 30%-50%.

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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.