ISO 4656:2007

Rubber compounding ingredients — Carbon black — Determination of oil absorption number (OAN) and oil absorption number of compressed sample (COAN)

Standard Details

Oil absorption number (OAN) is a measure of the ability of a carbon black to absorb liquids. This property is a function of the structure of the carbon black. Either dibutyl phthalate (DBP) or paraffin oil is acceptable for use with standard pelleted grades, including N-series carbon blacks found in ASTM D 1765, although OAN testing using paraffin oil on some speciality blacks and powder blacks may result in unacceptable differences as compared to OAN testing using DBP oil. While studies have shown the two oils to give comparable precision, paraffin oil offers the advantage of being non-hazardous.

ISO 4656:2007 specifies a method using an absorptometer for the determination of the oil absorption number of carbon black for use in the rubber industry.

The same method is used for the determination of the oil absorption number of compressed samples of carbon black. The procedure for the preparation of the compressed samples is described in the standard.

General Information

Status : WITHDRAWN

Standard Type: Main

Document No: ISO 4656:2007

Document Year: 2007

Pages: 16

Edition: 1

Section Volume:
ISO/TC 45/SC 3. Raw materials (including latex) for use in the rubber industry

ICS:
83.040.20 Rubber compounding ingredients

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ISO 4656:2007

ISO 4656:2007

Standard Details

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