# ISO 7781:2008 — Withdrawn and superseded ISO standards

For ISO 7781:2008, item title is Styrene-butadiene rubber, raw  — Determination of soap and organic-acid content; status code is 9599; successor is ISO 7781:2017; withdrawn / published date is 2008-03-20, recorded from its source on 2026-08-05.

- **Identifier:** ISO 7781:2008 _(verified: appears in the quote below)_
- **Item title:** Styrene-butadiene rubber, raw  — Determination of soap and organic-acid content _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 7781:2017
- **Withdrawn / published date:** 2008-03-20 _(verified: appears in the quote below)_

## What the source says

> 45393,IS,,ISO 7781:2008,"Styrene-butadiene rubber, raw — Determination of soap and organic-acid content",Caoutchouc butadiène-styrène brut — Détermination de la teneur en savons et acides organiques,2008-03-20,4,['83.040.10'],ISO/TC 45/SC 3,9599,[33841],[68071],['en'],7,"<p>ISO 7781:2008 specifies methods for the determination of the soap and organic-acid content of raw styrene-butadiene rubber (SBR). Method A is the titration method using indicator reagent. Method B is the titration method using an autotitrator or pH-meter.</p><p>The methods depend on the extraction of the organic acids and soaps from the rubber by means of a specified solvent. In practice, therefore, it is convenient to d

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).