Barnebey & Sutcliffe

link to home page Link to Continental Carbon website

205 W. Main Street, Kirkersville, Ohio 43033
Tel: 740-919-4966 - Toll Free: 833-919-4966


STI™-X is a coal-based, hydroxide impregnated, activated carbon specifically developed for the removal of acid gases and odor compounds from air. It is manufactured by high-temperature steam activation of selected grades of bituminous coal. STI™-X is a proven product for indoor air quality applications involving purification of inlet, recycle, or exhaust air streams. It provides very high capacity for compounds that are not strongly adsorbed by other carbons (such as hydrogen sulfide, mercaptans, sulfur dioxide, chlorine, hydrogen chloride, etc.). STI™-X is a 4-mm pellet to be used when low pressure drop is critical.

STI-X Value Chart

The impregnates on this carbon have been shown to decrease the ignition temperature of the carbon. This product passes the United Nations Self-heating Test (United Nations Transportation of Dangerous Goods, Manual of Tests and Criteria, Part III, Section - Test N.4 - Test Method for Self Heating Substances) and is therefore deemed suitable for shipment without concern over it self-heating. However, in some applications when the carbon is left open to air and low convective flow of air passes through it, the carbon can self-heat and ignite. Therefore, when an adsorption vessel containing carbon is out of service or in storage, care should be taken to prevent convective airflow which can be prevented with the installation of blind flanges on inlet and outlet connections.

Safety Message
Activated carbon preferentially removes oxygen from air. In closed or partially closed containers and vessels, oxygen depletion may reach hazardous levels. If workers are to enter a vessel containing carbon, appropriate sampling and work procedures for potentially low oxygen spaces should be followed, including all applicable Federal and State requirements.


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