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10478-U Supelco

Carboxen® Adsorbent

matrix Carboxen® 1000, 60-80 mesh, bottle of 10 g



Related Categories Adsorbents, Analytical/Chromatography, Carbon Molecular Sieve (CMS) Adsorbents, Carboxen Adsorbents, Gas Chromatography (GC),
packaging   bottle of 10 g
matrix   Carboxen® 1000
particle size   60-80 mesh
pore size   ~10-12 Å pore diameter
  ~0.16 cm3/g mesoporosity
  ~0.25 cm3/g macroporosity
  ~0.44 cm3/g microporosity
surface area   ~1200 m2/g
density   ~0.47 g/mL (free fall density)


General description

A carbon molecular sieve (CMS) is the porous carbon skeletal framework that remains after pyrolysis of a polymeric precursor. These particles are:
• Spherical (better packed bed performance than granular particles)
• Hard and non-friable (pack well, will not break)
• Highly porous (high surface areas)
• Used for molecules with an analyte size relative to C2-C5 n-alkanes
• Hydrophobic (can be used in high humidity environments)

Generally, CMS adsorbents offer greater relative adsorptive strength compared to spherical graphitized polymer carbon (SGPC) and graphitized carbon black (GCB) adsorbents. Our Carboxen products are a type of CMS adsorbent.
• Have tapered pores, resulting in excellent thermodynamic properties for both adsorption and desorption (have the best thermodynamic performance of any adsorbents)
• The surface chemistry can be tailored for specific target analytes

For more information about any of our specialty carbon adsorbents, please visit sigma-aldrich.com/carbon

Legal Information

Carboxen is a registered trademark of Sigma-Aldrich Co. LLC

Price and Availability

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Protocols & Articles


Carbon Adsorbents: Physical Characteristics and Selection Guide

The following information is gathered to assist chemists and method developers in locating the proper specialty carbon adsorbent for their use. Additional assistance can be obtained by contacting our...
Keywords: Adsorption, Air Monitoring, Gas chromatography

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Choosing the Right Adsorbent for Your Thermal Desorption Gas Chromatography Applications [VIDEO]

This webinar provides an overview of adsorbents that are suitable for thermal desorption (TD), and the factors you need to consider when selecting an adsorbent. The presentation provides details abou...
Keywords: Sample preparations

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