ASTM-D4607

Standard Test Method for Determination of Iodine Number of Activated Carbon

Applicability: ASTM D4607 is a standard test method for determining the iodine number of activated carbon, which is a measure of its adsorptive capacity and porosity. It involves measuring the amount of iodine adsorbed by a gram of carbon from an aqueous solution under specific conditions.

Purpose: ASTM D4607 is used to determine the relative activation level of activated carbon, both unused and reactivated, by measuring its ability to adsorb iodine from an aqueous solution. The amount of iodine adsorbed (in milligrams) by 1 gram of carbon under the test conditions is called the iodine number. The iodine number is a relative indicator of the porosity of activated carbon, which can be used as an approximation of its specific surface area.