# ISO 3858:2008 — Withdrawn and superseded ISO standards For ISO 3858:2008, item title is Rubber compounding ingredients — Carbon black — Determination of light transmittance of toluene extract; status code is 9599; successor is ISO 3858:2018; withdrawn / published date is 2008-09-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 3858:2008 _(verified: appears in the quote below)_ - **Item title:** Rubber compounding ingredients — Carbon black — Determination of light transmittance of toluene extract _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 3858:2018 - **Withdrawn / published date:** 2008-09-01 _(verified: appears in the quote below)_ ## What the source says > 51675,IS,,ISO 3858:2008,Rubber compounding ingredients — Carbon black — Determination of light transmittance of toluene extract,Ingrédients de mélange du caoutchouc — Noir de carbone — Détermination de la transmittance spectrale de l'extrait toluénique,2008-09-01,3,['83.040.20'],ISO/TC 45/SC 3,9599,[36691],[72850],"['en','fr','ru']",6,"

ISO 3858:2008 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 matt ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).