# ISO 2303:1983 — Withdrawn and superseded ISO standards For ISO 2303:1983, item title is Rubber, polyisoprene (IR) — Non-oil extended, solution-polymerized types — Test recipe and evaluation of vulcanization characteristics; status code is 9599; successor is ISO 2303:1990; withdrawn / published date is 1983-07-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 2303:1983 _(verified: appears in the quote below)_ - **Item title:** Rubber, polyisoprene (IR) — Non-oil extended, solution-polymerized types — Test recipe and evaluation of vulcanization characteristics _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 2303:1990 - **Withdrawn / published date:** 1983-07-01 _(verified: appears in the quote below)_ ## What the source says > 7132,IS,,ISO 2303:1983,"Rubber, polyisoprene (IR) — Non-oil extended, solution-polymerized types — Test recipe and evaluation of vulcanization characteristics",Caoutchouc polyisoprène (IR) — Types polymérisés en solution et non étendus à l'huile — Formule d'essai et évaluation des caractéristiques de vulcanisation,1983-07-01,2,['83.060'],ISO/TC 45/SC 3,9599,,[7133],"['en','fr']",2, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).