# ISO 4581:1987 — Withdrawn and superseded ISO standards

For ISO 4581:1987, item title is Plastics — Styrene/acrylonitrile copolymers — Determination of residual acrylonitrile monomer content — Gas chromatography method; status code is 9599; successor is ISO 4581:1994; withdrawn / published date is 1987-11-19, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4581:1987 _(verified: appears in the quote below)_
- **Item title:** Plastics — Styrene/acrylonitrile copolymers — Determination of residual acrylonitrile monomer content — Gas chromatography method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4581:1994
- **Withdrawn / published date:** 1987-11-19 _(verified: appears in the quote below)_

## What the source says

> 10504,IS,,ISO 4581:1987,Plastics — Styrene/acrylonitrile copolymers — Determination of residual acrylonitrile monomer content — Gas chromatography method,Plastiques — Copolymères styrène/acrylonitrile — Dosage de l'acrylonitrile monomère résiduel — Méthode par chromatographie en phase gazeuse,1987-11-19,1,['83.080.20'],ISO/TC 61/SC 5,9599,,[10506],"['en','fr']",6,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).