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Carbotrap® Adsorbent

matrix Carbotrap® C, 20-40 mesh, bottle of 500 g

EC Number:

product line


Quality Level




bottle of 500 g


LPLC: suitable
gas chromatography (GC): suitable


Carbotrap® C

matrix active group


particle size

20-40 mesh

pore size

~0 cm3/g macroporosity
~0 cm3/g mesoporosity
~0 cm3/g microporosity
~0 Å pore diameter

surface area

~10 m2/g

bulk density

~0.70 g/mL (free fall density)

separation technique

reversed phase

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General description

Carbotrap® C was used for the sampling and quantitative analysis of microbially produced volatiles using thermal desorption-gas chromatography.
Carbotrap®/Carbopack Adsorbent can withstand high bake-out temperature without losing the mechanical and chemical integrity. It has a high affinity for isoprene and does not retain significant amounts of water. Furthermore it has a tendency to pulverize if it is packed too tightly.
A graphitized carbon black (GCB) can be non-porous or porous. The graphitization process results in a highly pure surface with great adsorption and desorption (if required) properties. Surface interactions depend solely on dispersion (London) forces. These particles are:
  • Granular
  • Friable
  • Used for molecules with an analyte size relative to C3-C20+ n-alkanes
  • Hydrophobic (can be used in high humidity environments)

Generally, GCB adsorbents offer weaker relative adsorptive strength compared to carbon molecular sieve (CMS) adsorbents, and similar relative adsorptive strength compared to spherical graphitized polymer carbon (SGPC) adsorbents. Our Carbotrap products are a type of GCB adsorbent.
  • Particles are 20/40 mesh
  • These large particles allow high flow rates without excessive pressure drops

For more information about any of our specialty carbon adsorbents, please visit


500 g

Legal Information

Carbopack is a trademark of Sigma-Aldrich Co. LLC
Carbotrap is a registered trademark of Sigma-Aldrich Co. LLC

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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