Explore our premium grade selection of industrial desiccants, catalysts, and molecular sieves
Established in 1994, Shanghai Jiuzhou Chemicals Co., Ltd. is strategically located in the prominent economic hub of Shanghai. Over three decades, Jiuzhou has consistently adhered to the core philosophies of "Quality Control" and "Continuous Innovation", leading the industry in the development, synthesis, and distribution of high-performance chemical adsorbents.
Our expansive product portfolio encompasses dynamic molecular sieve powders, advanced molecular sieves, activated powders, high-purity activated alumina, specialized aluminum oxide catalysts, high-grade alumina packing media, inert ceramic balls, sodium silicates, aluminum hydroxide, zeolite 4A, sodium carbonates, and SLES.
All operations align with the stringent requirements of ISO9001:2008 Quality Management System certifications, supplemented by comprehensive audits from globally recognized third-party agencies including TUV and SGS. With deep-seated technical expertise, Jiuzhou supplies tailored moisture control solutions that safeguard critical global supply chains.
Key regulatory shifts, environmental priorities, and performance criteria defining the next decade
Due to strict REACH regulations, there is an industry-wide transition away from cobalt-chloride based blue indicator gels (classified as a substance of very high concern) toward non-toxic, cobalt-free alternatives like organic methyl-violet and orange-to-colorless/green indicators.
Semiconductor packaging and advanced electronics require desiccants wrapped in ultra-clean, dust-free Tyvek packaging material. Zero particulate emission is mandatory to prevent microscopic surface contamination on wafers and circuit structures.
Compliance with FDA Title 21 CFR, USP <670>, and European Pharmacopoeia guidelines is now standard. Raw silica gel materials must exhibit complete inertness, high chemical stability, and must be free of heavy metals or volatile organic compounds.
Silica gel is an amorphous form of silicon dioxide ($SiO_2 \cdot nH_2O$) constructed with a highly porous internal structure. This complex network of microscopic interconnecting pores creates an immense surface area—typically ranging from 600 to 800 square meters per gram ($m^2/g$). It is this extensive surface area that drives physical adsorption via van der Waals forces and capillary condensation.
During the manufacturing process, precise control over the polymerization of silicic acid determines the pore classification:
| Desiccant Type | RH = 20% | RH = 50% | RH = 90% |
|---|---|---|---|
| Type A Silica Gel | ~12% wt | ~28% wt | ~38% wt |
| JZ-WSG (Water Resistant) | ~10% wt | ~22% wt | ~35% wt |
| Molecular Sieve (4A) | ~20% wt | ~22% wt | ~22% wt |
| Activated Alumina | ~5% wt | ~15% wt | ~35% wt |
*Adsorption values are given as weight percentages (wt%) relative to dry desiccant weight.
Standardized and custom formulations tailored to specific engineering requirements
Jiuzhou’s proprietary aluminosilicate and specialty molecular sieve formulations are engineered to dry natural gas, cracking gas, and liquid olefins, ensuring dew points down to -70°C while resisting heavy hydrocarbon fouling.
In electronic component manufacturing, our silica-gel and activated alumina beads are integrated into high-flow regenerable PSA (Pressure Swing Adsorption) drying columns to secure ultra-dry environments, preventing ESD events and micro-corrosion.
We manufacture pharmaceutical-grade desiccant canisters and pouches using strict cleanroom protocols. These products maintain internal humidity thresholds inside vaccine packages, shielding active ingredients from degradation.
Our two state-of-the-art facilities in Shanghai and Wuxi power our global supply capabilities
Focused on molecular synthesis, catalytic product development, and sophisticated testing procedures. Housing our central laboratory equipped with dynamic gas adsorption columns and dynamic dewpoint tracking instruments.
Features high-throughput rotary kilns, automated bead shaping equipment, and high-speed packaging lines. This facility handles bulk production demands under strict eco-compliance and zero-waste initiatives.
We actively contribute to drafting national and regional specifications for industrial chemical adsorbents
JB / T 10532-2017
General Adsorption Air Dryers
HG / T 3927-2007
Industrial Activated Alumina
JB / T 10526-2017
Refrigerant Air Dryers
T/CGMA 1201-2024
Compressor Association Rules
T/HGHX 02—2024
Chemical Association Standard
T/CIET 854-2024
Inorganic Material DirectivesIntegrating green chemistry practices to foster sustainable industrial growth
Jiuzhou is deeply committed to sustainable manufacturing. By reducing greenhouse gas emissions across our factories, upgrading rotary dryers to run on clean natural gas, recycling heat from energy-intensive calcining stages, and committing to cobalt-free chemical indicator formulas, we protect both the local environment and global ecosystems.
Pioneering the future of smart molecular engineering and energy-saving materials
Conventional silica gels and molecular sieves require significant thermal energy for regeneration (ranging from 120°C to 250°C). Our R&D team is actively engineering hybrid adsorbent structures designed to release trapped water molecules at temperatures below 80°C. This will help plant operators cut energy consumption during desiccant regeneration cycles by up to 30%.
By doping high-purity activated alumina and silica gel matrices with trace transition metals, we are developing multi-functional materials that remove water vapor while concurrently trapping trace volatile organic pollutants (VOCs) and acid gases, simplifying multi-stage filtering steps.
Common questions answered by our material scientists and QA directors
Complete product spectrum offering superior adsorption, purification, and heat resistance
Whether you need help selecting pore sizes, checking regulatory compliance, or requesting custom bulk shipments, we respond within 24 hours.
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