# ISO 2535:1997 — Withdrawn and superseded ISO standards For ISO 2535:1997, item title is Plastics — Unsaturated polyester resins — Measurement of gel time at 25 degrees C; status code is 9599; successor is ISO 2535:2001; withdrawn / published date is 1997-03-06, recorded from its source on 2026-08-05. - **Identifier:** ISO 2535:1997 _(verified: appears in the quote below)_ - **Item title:** Plastics — Unsaturated polyester resins — Measurement of gel time at 25 degrees C _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 2535:2001 - **Withdrawn / published date:** 1997-03-06 _(verified: appears in the quote below)_ ## What the source says > 27070,IS,,ISO 2535:1997,Plastics — Unsaturated polyester resins — Measurement of gel time at 25 degrees C,Plastiques — Résines de polyesters non saturés — Mesurage du temps de gélification à 25 degrés C,1997-03-06,2,['83.080.10'],ISO/TC 61/SC 12,9599,[7477],[30340],"['en','fr']",5, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).