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ISO 1304:2016

Rubber compounding ingredients — Carbon black — Determination of iodine adsorption number

Oct 7, 2016

General information

90.93     Jun 7, 2021

ISO

ISO/TC 45/SC 3

International Standard

83.040.20  

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Scope

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).

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 1304:2006

NOW

PUBLISHED
ISO 1304:2016
90.93 Standard confirmed
Jun 7, 2021

National adoptions

SRPS ISO 1304:2018  
ISS

Rubber compounding ingredients — Carbon black — Determination of iodine adsorption number

90.93   Standard confirmed

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