# ISO 1233:1975 — Withdrawn and superseded ISO standards

For ISO 1233:1975, item title is Plastics — Determination of viscosity number of methyl methacrylate polymers and copolymers in dilute solution; status code is 9599; successor is ISO 1628-6:1990; withdrawn / published date is 1975-09-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 1233:1975 _(verified: appears in the quote below)_
- **Item title:** Plastics — Determination of viscosity number of methyl methacrylate polymers and copolymers in dilute solution _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 1628-6:1990
- **Withdrawn / published date:** 1975-09-01 _(verified: appears in the quote below)_

## What the source says

> 5852,IS,,ISO 1233:1975,Plastics — Determination of viscosity number of methyl methacrylate polymers and copolymers in dilute solution,Matières plastiques — Détermination de l'indice de viscosité des polymères et copolymères du méthacrylate de méthyle en solution diluée,1975-09-01,1,['83.080.01'],ISO/TC 61,9599,,[6233],"['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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).