# ISO 2303:2003 — Withdrawn and superseded ISO standards

For ISO 2303:2003, item title is Isoprene rubber (IR) — Non-oil-extended, solution-polymerized types — Evaluation procedure; status code is 9599; successor is ISO 2303:2011; withdrawn / published date is 2003-01-06, recorded from its source on 2026-08-05.

- **Identifier:** ISO 2303:2003 _(verified: appears in the quote below)_
- **Item title:** Isoprene rubber (IR) — Non-oil-extended, solution-polymerized types — Evaluation procedure _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 2303:2011
- **Withdrawn / published date:** 2003-01-06 _(verified: appears in the quote below)_

## What the source says

> 29382,IS,,ISO 2303:2003,"Isoprene rubber (IR) — Non-oil-extended, solution-polymerized types — Evaluation procedure",Caoutchouc isoprène (IR) — Types polymérisés en solution et non étendus à l'huile — Méthode d'évaluation,2003-01-06,4,['83.060'],ISO/TC 45/SC 3,9599,"[7133,7134]",[52995],"['en','fr']",10,"<p>ISO 2303 specifies, for general purpose non-oil-extended, solution-polymerized rubbers (IR):</p><ul><li>physical and chemical tests on raw rubbers;</li><li>standard materials, standard test formulation, equipment and processing methods for evaluating the vulcanization characteristics.</li></ul><p>Two mill-mixing procedures are described in this Internatioanl Standard and an internal mixer

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).