This International Standard specifies a method for the determination of the light transmittance of the toluene
extract from carbon black for use in the rubber industry, as a means of measuring the discolouration caused
by the extractable matter
The light transmittance value provides an estimate of the degree of discolouration caused by the toluene-
extractable matter present on the surface of the carbon black.
This method may not be applicable to carbon blacks with a high extractable-matter content.
ISO 3858:2008 Referenced Document
ISO 1124 Rubber compounding ingredients; carbon black shipment sampling procedures
ISO 1126:2006 Rubber compounding ingredients - Carbon black - Determination of loss on heating
ISO/TR 9272 Rubber and rubber products - Determination of precision for test method standards
ISO 3858:2008 history
2018ISO 3858:2018 Rubber compounding ingredients - Carbon black - Determination of light transmittance of toluene extract
2008ISO 3858:2008 Rubber compounding ingredients - Carbon black - Determination of light transmittance of toluene extract
2004ISO 3858:2004 Rubber compounding ingredients - Carbon black - Determination of light transmittance of toluene extract