International Standard
ISO 1304:2016
Rubber compounding ingredients — Carbon black — Determination of iodine adsorption number
Reference number
ISO 1304:2016
Edition 5
International Standard
Read sample
ISO 1304:2016
Published (Edition 5, 2016)
This standard was last reviewed and confirmed in 2021. Therefore this version remains current.

ISO 1304:2016

ISO 1304:2016
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ISO 1304:2016 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.

In case of dispute, the preferred method is method B (potentiometric titration).

General information

  •  : Published
     : 2016-10
    : International Standard confirmed [90.93]
  •  : 5
     : 14
  • ISO/TC 45/SC 3
  • RSS updates

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