Silica gel is an amorphous, highly porous form of silicon dioxide ($SiO_2 \cdot nH_2O$). Unlike crystalline silicas, it possesses an intricate, interconnected three-dimensional network of siloxane ($Si-O-Si$) bonds and surface-bound silanol ($Si-OH$) groups. These active sites dictate its outstanding chemical properties, thermodynamic affinity for polar solvents, and high thermal stability. Governed by their specific structural architectures, various types of industrial silica gel serve as critical desiccants, catalyst supports, chromatography media, and functional agents across countless global sectors.
Due to its internal structural network, silica gel exhibits an exceptionally large specific surface area, typically ranging from 600 to 800 m²/g. This immense area hosts a high density of active hydroxyl groups that engage in hydrogen bonding with target vapor molecules, primarily water ($H_2O$).
Exhibiting high chemical resistance, silica gel remains inert when exposed to most strong acids, organic solvents, and halogens. It is only degraded by hydrofluoric acid ($HF$) or highly alkaline compounds ($pH > 9$), which dissolve the protective silica matrix.
With a melting point exceeding 1600°C, the core matrix of silica gel remains structurally intact at high temperatures. However, heating above 200°C initiates dehydroxylation, where adjacent silanol groups merge, releasing water and reducing adsorption capacity.
Shanghai Jiuzhou Chemicals Co., Ltd. is strategically situated in Shanghai, the largest economic and industrial development hub in China. Over the decades, Jiuzhou has consistently adhered to our founding principles: "Quality Control 100%, Innovation 100%". We are fully committed to the advanced research, development, and state-of-the-art manufacturing of high-quality industrial chemical adsorbents.
Our comprehensive portfolio features diverse molecular sieve powders, synthetic molecular sieves, activated powder, activated alumina, aluminum oxide catalysts, specialized alumina tower packings, chemical ceramic balls, sodium silicates, aluminum hydroxide, zeolite 4A, sodium carbonates, and SLES. All Jiuzhou products conform strictly to the ISO9001:2008 quality management certification framework and have been verified by world-leading inspection agencies, including TUV and SGS.
Jiuzhou operates advanced manufacturing centers in both Shanghai and Wuxi. Equipped with automated, multi-functional production lines and dynamic simulation laboratories, we verify the performance of our products under extreme chemical conditions. Our quality control system uses gas chromatography, pore analyzers, and mechanical testers to ensure each batch adheres to strict international benchmarks.
At Jiuzhou Chemicals, we do not simply follow industry rules—we actively write them. As a major standard-setting organization in China's industrial chemical landscape, we help define national benchmarks for compressed air systems and industrial chemical testing. This technical leadership ensures that every metric of our silica gel and activated alumina products aligns with state-level compliance and international quality standards.
JB / T 10532-2017
Adsorption compressed air dryers
HG / T 3927-2007
Activated alumina for industrial use
JB / T 10526-2017
Refrigeration compressed air dryers
T / CGMA 1201-2024
Machinery Industry Standards
T / HGHX 02—2024
Chemical Association Standards
T / CIET 854-2024
Eco-friendly Chemical Process StandardsSourcing silica gel from China through Jiuzhou Chemicals provides clear logisitcal and chemical advantages. Our direct control over basic raw materials like sodium silicate ($Na_2SiO_3$) protects customers from market price swings. By optimizing key processing steps—such as acidification, aging, washing, and thermal activation—we produce silica gel with precise pore structures at highly competitive prices.
We manage the entire production cycle from the starting raw materials to the packaged product. This vertical integration allows us to customize bead sizes (from 0.5mm micro-beads to 8mm macro-spheres) and adjust pore structures to meet specific industry needs.
Located near major ocean terminals in Shanghai, we ensure fast container loading and low shipping costs. Our experienced logistics teams manage export compliance and provide accurate documentation for custom clearances worldwide.
We prioritize green manufacturing, utilizing clean energy systems and water recycling networks. Our silica gel products are free of toxic heavy metal colorants, fully meeting international ecological requirements.
Silica gel is highly versatile, with physical and chemical properties that can be adjusted for a wide variety of industrial tasks. From keeping pharmaceutical products stable to purging heavy moisture in compressed air systems, our silica gel delivers reliable performance under demanding conditions.
In heavy manufacturing, moisture in air lines can corrode pneumatic tools and spoil products. Our silica gel adsorbents extract water vapor from gas streams efficiently, maintaining low dew points down to -40°C in high-flow desiccant dryers.
Maintaining a dry environment is critical for pharmaceutical shelf-life. Our food-grade silica gel packets protect sensitive organic compounds from moisture damage, mold growth, and active chemical decomposition.
The highly stable siloxane framework makes our silica gel an excellent catalyst carrier. Its open, uniform pore network supports active metal oxides, providing high thermal stability and resistance to chemical poisoning during organic reactions.
In chemical synthesis and testing, purifying compounds requires precise particle size distribution. Our chromatographic-grade silica gels offer highly uniform pores and surface areas, allowing for clear separation of organic isomers and complex pharmaceutical molecules.
Power transformers depend on insulating oils to run safely. As transformer oil expands and contracts, the air it draws in must be dry. Our indicator silica gels dry this air and change color to signal when maintenance is needed.
Global supply chains must navigate strict, evolving chemical regulations. Working with Jiuzhou Chemicals gives you access to a fully compliant supply chain, complete with technical resources and standard safety approvals. Our products are formulated to meet safety standards in North America, Europe, and Asia, ensuring trouble-free imports and regulatory peace of mind.
We ensure our silica gel meets all European REACH and RoHS standards. Our formulations are free of hazardous substances and contain no cobalt-based indicator compounds, protecting both the environment and end users.
Our pharmaceutical-grade products are made in controlled cleanrooms that align with FDA requirements. They are completely dust-free, non-reactive, and safe for direct contact with food, nutritional supplements, and oral medications.
Our dynamic laboratory can simulate your unique process conditions, adjusting pore size, particle shape, and moisture retention limits to design the ideal adsorbent for your system.
"Better air, Better life"
We are dedicated to sustainable manufacturing. We continually work to reduce our carbon footprint, lower chemical emissions, and implement water-recycling systems. By developing durable, reusable silica gels with high thermal stability, we help our partners reduce waste and support their own green initiatives.
Review our detailed answers to common technical and chemical questions about silica gel performance, selection, and processing.
