Carbopack Adsorbent

matrix Carbopack X, 120-400 mesh, bottle of 50 g

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Quality Level


bottle of 50 g


Carbopack X

particle size

120-400 mesh

pore size

~0.62 cm3/g mesoporosity
~0 cm3/g macroporosity
~0 cm3/g microporosity
~100 Å pore diameter

surface area

~240 m2/g


~0.39 g/mL (free fall density)

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General description

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.
Carbotrap® X has a very high specific surface area and was used for the recovery of low boiling hydrocarbons like 1,3-butadiene and isoprene.
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 Carbopack products are a type of GCB adsorbent.
  • Particles are 40 mesh and smaller
  • Use 40/60 mesh to prevent channeling (if observed with a 20/40 mesh Carbotrap® adsorbent)
  • Use smaller mesh (60/80, 80/100, etc.) for all other applications
  • Use the smallest particle size available as long as the application can handle the pressure drop

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

Legal Information

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


Health hazard

Signal Word


Hazard Statements

Precautionary Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Certificate of Analysis
Certificate of Origin
Stability of reactive low boiling hydrocarbons on carbon based adsorbents typically used for adsorptive enrichment and thermal desorption.
Dettmer K, et al.
Fresenius Journal of Analytical Chemistry, 366 (1), 70-78 (2000)
Comparison of Tenax TA and Carbotrap for sampling and analysis of volatile organic compounds in air.
Rothweiler H, et al.
Atmospheric Environment, 25 (2), 231-235 (1991)
Li-Ming Yuan et al.
Analytical chemistry, 78(18), 6384-6390 (2006-09-15)
Single-walled carbon nanotubes (SWNTs) have high surface area, high adsorption ability, and nanoscale interactions. In this study, capillary columns including SWNTs, ionic liquid (IL), and IL + SWNTs for GC were prepared. The separation results showed that SWNTs possessed a...
Rybolt et al.
Journal of colloid and interface science, 220(1), 148-156 (1999-11-07)
Second gas-solid virial coefficients were determined at 403.5 +/- 0.5 K for 6 adsorbates, including butane, chloroform, trichlorofluoromethane (Freon 11), bromochloromethane, 1-chloro-2-methylpropane, and dibromodifluoromethane. For another 11 adsorbates, including dichlorodifluoromethane (Freon 12), chlorodifluoromethane (Freon 22), methyl chloride, methylene chloride, propane...
S A Heberle et al.
Analytical chemistry, 72(4), 840-845 (2000-03-04)
This paper describes a procedure for simultaneous enrichment, separation, and quantification of acetanilide herbicides and their major ionic oxanilic acid (OXA) and ethanesulfonic acid (ESA) metabolites in groundwater and surface water using Carbopack B as a solid-phase extraction (SPE) material....
Carbon Molecular sieves (CMS) are a versatile range of adsorbents that can be tailored for specific applications. Supelco® scientists have been synthesizing synthetic CMS carbons for several decades, starting from tailoring of the starting polymers/copolymers, to modifying the final properties of the subsequent CMS carbon.
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