BASF Catalysts offers exceptional expertise in the development of technologies that protect the air we breathe, produce the fuels that power our world and ensure efficient production of a wide variety of chemicals, plastics and other products including advanced battery materials. BASF’s Catalysts division is the world’s leading supplier of environmental and process catalysts. The group offers exceptional expertise in the development of technologies that protect the air we breathe, produce the fuels that power our world and ensure efficient production of a wide variety of chemicals, plastics and other products, including advanced battery materials. We believe mobility’s future lies in more than just products. So where others come to a full stop, we’re just getting started—by leveraging the full power of BASF to continually advance our comprehensive package of sustainable solutions that enable us to travel further, as well as above and beyond. Protecting the air we breathe from harmful emissions through innovation. BASF leverages unsurpassed expertise in the development of emission control technologies for a wide range of market applications. BASF is committed to advancing and promoting environmentally-sound technologies to achieve a sustainable future in aviation. Offering 50 years of experience developing intelligent solutions for air quality over a wide range of applications — enabling clean air for a healthier, more sustainable future. With more than 150 years of experience in metal sourcing, trading, and hedging, we’ve built tangible results for our industrial customers. With more than 100 years of experience in recycling materials, BASF’s end-to-end recycling program is known and trusted around the globe. As a leader in precious-metal thermocouples for many years, BASF recently applied its technological expertise to optical-based temperature measurement. Developing and producing pharmaceutical ingredients for more than 75 years, enabling us to provide the solutions you need to meet today's and tomorrow's challenges for your pharmaceutical business. Find the latest news and media information for BASF’s Catalysts division, headquartered in Iselin, New Jersey, USA, the world’s leading supplier of environmental and process catalysts. Explore this collection of resources to learn more about our innovative research and Catalyst solutions.

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4A-BF Molecular Sieve

Data Sheet

4A-BF Molecular Sieve
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BASF 4ABF Molecular Sieve is a synthetic crystalline aluminosilicate with a regular micropore structure.

BASF 4ABF Molecular Sieve is a widely used adsorbent for many different applications. BASF 4A exhibits high water adsorption capacity at low partial pressures and at temperatures up to 100 °C.

Beads size range, nominal, mm

1.6 – 2.5
2.5 – 5.0
Mesh Range, approx

8 x 12
4 x 8
Bulk Density, compacted, g/L

620 - 700
620 - 700
Attrition, % wt.

Max 0.2
Max 0.2
Crush Strength, N/bead

Min 25
Min 45
Moisture Content (as delivered, % wt)

Max 1.0
Max 1.0
Water Adsorption Capacity*, 55% relative humidity, 20 °C, % wt

Min 24
Min 24

*Sample activated. Other beads and sizes available on request

About Us

BASF's Catalysts division is the world's leading supplier of environmental and process catalysts. The group offers exceptional expertise in the development of technologies that protect the air we breathe, produce the fuels that power our world and ensure efficient production of a wide variety of chemicals, plastics and other products, including advanced battery materials. By leveraging our industry-leading R&D platforms, passion for innovation and deep knowledge of precious and base metals, BASF's Catalysts division develops unique, proprietary solutions that drive customer success.