# ISO 306:1974 — Withdrawn and superseded ISO standards

For ISO 306:1974, item title is Plastics — Determination of the Vicat softening temperature of thermoplastics; status code is 9599; successor is ISO 306:1987; withdrawn / published date is 1974-12-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 306:1974 _(verified: appears in the quote below)_
- **Item title:** Plastics — Determination of the Vicat softening temperature of thermoplastics _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 306:1987
- **Withdrawn / published date:** 1974-12-01 _(verified: appears in the quote below)_

## What the source says

> 4241,IS,,ISO 306:1974,Plastics — Determination of the Vicat softening temperature of thermoplastics,Matières plastiques — Détermination de la température de ramollissement Vicat des thermoplastiques,1974-12-01,1,['83.080.20'],ISO/TC 61,9599,,[4242],"['en','fr']",3,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).