# ISO 5478:1990 — Withdrawn and superseded ISO standards

For ISO 5478:1990, item title is Rubber — Determination of styrene content — Nitration method; status code is 9599; successor is ISO 5478:2006; withdrawn / published date is 1990-11-15, recorded from its source on 2026-08-05.

- **Identifier:** ISO 5478:1990 _(verified: appears in the quote below)_
- **Item title:** Rubber — Determination of styrene content — Nitration method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 5478:2006
- **Withdrawn / published date:** 1990-11-15 _(verified: appears in the quote below)_

## What the source says

> 11520,IS,,ISO 5478:1990,Rubber — Determination of styrene content — Nitration method,Caoutchouc — Détermination de la teneur en styrène — Méthode par nitration,1990-11-15,2,['83.060'],ISO/TC 45/SC 2,9599,[11519],[43682],"['en','fr']",4,"<p>Applicable to all types of styrene-butadiene rubber (SBR) including oil-extended types and also for block copolymers containing up to 50 % (m/m) of styrene. The procedure may give low results when the content of mineral fillers insoluble in nitric acid exceeds 5 % (m/m). The principle is based on the extraction of a test portion with acetone and digestion with nitric acid to oxidize the styrene to p-nitrobenzoic acid. Extraction of the p-nitrobenzoic acid

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).