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ASTM D4607-14(2021)

Historical Reaffirmation

Standard Test Method for Determination of Iodine Number of Activated Carbon

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1.1 This test method covers the determination of the relative activation level of unused or reactivated carbons by adsorption of iodine from aqueous solution. The amount of iodine absorbed (in milligrams) by 1 g of carbon using test conditions listed herein is called the iodine number.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 7.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


4.1 The iodine number is a relative indicator of porosity in an activated carbon. It does not necessarily provide a measure of the carbon's ability to absorb other species. Iodine number may be used as an approximation of surface area for some types of activated carbons (see Test Method C819). However, it must be realized that any relationship between surface area and iodine number cannot be generalized. It varies with changes in carbon raw material, processing conditions, and pore volume distribution (see Terminology D2652).

4.2 The presence of adsorbed volatiles, sulfur, and water extractables may affect the measured iodine number of an activated carbon.

SDO ASTM: ASTM International
Document Number D4607
Publication Date June 1, 2021
Language en - English
Page Count 5
Revision Level 14(2021)
Supercedes
Committee D28.02
Publish Date Document Id Type View
March 1, 2014 D4607-14 Revision
June 1, 2021 D4607-14R21 Reaffirmation
March 1, 2011 D4607-94R11 Reaffirmation
Oct. 1, 2006 D4607-94R06 Reaffirmation
Feb. 10, 1999 D4607-94R99 Reaffirmation