# ISO 1663:1999 — Withdrawn and superseded ISO standards For ISO 1663:1999, item title is Rigid cellular plastics — Determination of water vapour transmission properties; status code is 9599; successor is ISO 1663:2007; withdrawn / published date is 1999-07-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 1663:1999 _(verified: appears in the quote below)_ - **Item title:** Rigid cellular plastics — Determination of water vapour transmission properties _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 1663:2007 - **Withdrawn / published date:** 1999-07-01 _(verified: appears in the quote below)_ ## What the source says > 6284,IS,,ISO 1663:1999,Rigid cellular plastics — Determination of water vapour transmission properties,Plastiques alvéolaires rigides — Détermination des caractéristiques de transmission de la vapeur d'eau,1999-07-01,2,['83.100'],ISO/TC 61/SC 10,9599,[6283],[41676],"['en','fr']",14, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).