GSO ISO 1304:2015
Gulf Standard
Current Edition
·
Approved on
03 September 2015
·
Rubber compounding ingredients -- Carbon black -- Determination of iodine adsorption number
GSO ISO 1304:2015 Files
English
13 Pages
Current Edition
Reference Language
28.76 OMR
GSO ISO 1304:2015 Scope
This International Standard specifies methods for the determination of iodine adsorption number of carbon blacks for use in the rubber industry. Two titration methods are described:
— method A: titration using a burette and starch as indicator;
— method B: potentiometric titration with an automatic titrator.
The iodine adsorption number is related to the surface area of a carbon black, and is generally in agreement with the nitrogen surface area. However, it is significantly depressed in the presence of a high content of volatile or solvent-extractable materials; the iodine adsorption number therefore does not always provide a measure of the specific surface area of a carbon black. Ageing of carbon black can also influence the iodine number.
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