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

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

Silica Gel For Moisture Absorption Manufacturers

Specification	Description
Product Type	Silica Gel for Moisture Absorption
Composition	Amorphous silica (SiO₂), highly porous material.
Appearance	Granules, beads, or packets; white, blue, orange, or clear.
Particle Size Range	0.5 mm to 8.0 mm (commonly: 1-3 mm, 2-4 mm); or custom sizes
Adsorption Capacity	30–40% of its own weight under normal conditions (relative humidity: 60%; temperature: 25°C).
Pore Size	Average 20–25 Å
Mode of Action	Adsorb water vapor through physical adsorption
pH Range	Neutral to slightly acidic (pH 4–8)
Moisture Content	Less than 5% in the dry state
Regeneration	It can be heated (120°C–150°C) to release adsorbed moisture, allowing reuse.
Package Type	Available in loose bulk, sachets, or canisters.
Color Indicators	Orange to Green: Indicate moisture absorption levels.
	Blue to Pink: Color transition for cobalt chloride indicator type.
Temperature Range	Operate efficiently within -40°C to 200°C
Application	Common uses in electronics, pharmaceuticals, food packaging, leather goods, and industrial equipment,etc.

Silica gel is a highly porous, non-crystalline form of silicon dioxide (SiO₂). Its immense internal surface area (700-800 m²/g), riddled with microscopic pores, allows it to adsorb and hold water vapor through physical adsorption efficiently, making it an excellent and stable desiccant.

High Absorption Capacity

This silica gel for moisture absorption can adsorb a significant amount of moisture relative to its own weight, especially in standard conditions.

At 25°C (77°F) and 50% Relative Humidity (RH)-a common testing condition-high-quality silica gel has an equilibrium adsorption capacity of approximately 25-30% of its own weight. This means 100 grams of silica gel can adsorb about 25-30 grams of water vapor.

Performance Across Humidity Ranges

Its capacity varies predictably with humidity levels, performing well in both moderate and high humidity.

At 20% RH, adsorption is around 10-12%.
At 80% RH, adsorption increases dramatically to 35-40%.

This silica gel for moisture absorption demonstrates its effectiveness across a wide range of environments.

Low Humidity Performance

A critical advantage of silica gel for moisture absorption over many other desiccants is its strong affinity for water molecules even in very dry environments. This allows it to lower the relative humidity in a sealed space to a very low level.

At 10% RH, it can still adsorb 8-10% of its weight in moisture. This makes it ideal for protecting moisture-sensitive items like electronics, pharmaceuticals, and precision instruments.

Reusability (Regeneration)

The adsorption process is physical, not chemical, meaning the water can be driven off with heat, allowing silica gel to be reused multiple times.

Saturated silica gel can be fully regenerated by heating it at 110°C to 120°C (230°F to 250°F) for 1-2 hours. After cooling, it regains its original adsorption capacity. It can undergo this cycle many times without significant performance degradation.

Applications

Application Category	Specific Use Cases
Food & Pharmaceuticals	• Packaged dry foods (e.g., snacks, spices, dried meats, seaweed) • Vitamin and supplement bottles • Pharmaceutical packaging
Electronics & Optics	• Storage of cameras, lenses, and binoculars • New electronics packaging • Sensitive circuit boards and components
Personal & Home Goods	• Closets, wardrobes, and storage boxes for clothes/shoes • Gym bags • Important documents, books, and photo albums • Leather goods (bags, jackets)
Industrial & Commercial	• Shipping containers (as container desiccants) • Machinery and tool storage • Military and aerospace equipment • Chemical packaging
Specialized & Niche Uses	• Seed and specimen preservation • Humidity control in museums and archives • Automotive and aviation industries (e.g., in air brake systems)

Tips

Safety: Although this silica gel for moisture absorption is non-toxic, it is not edible. Keep it out of reach of children and pets to prevent accidental ingestion.
Selecting a Grade: Depending on the application, choose a silica gel desiccant of different standards, such as industrial grade, food grade, or pharmaceutical grade.

If you are interested in our silica gel for moisture absorption, please feel free to contact us !

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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.