# ISO 9668:1990 — Withdrawn and superseded ISO standards

For ISO 9668:1990, item title is Pulps — Determination of magnesium content — Flame atomic absorption spectrometric method; status code is 9599; successor is ISO 12830:2011; withdrawn / published date is 1990-02-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 9668:1990 _(verified: appears in the quote below)_
- **Item title:** Pulps — Determination of magnesium content — Flame atomic absorption spectrometric method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 12830:2011
- **Withdrawn / published date:** 1990-02-01 _(verified: appears in the quote below)_

## What the source says

> 17515,IS,,ISO 9668:1990,Pulps — Determination of magnesium content — Flame atomic absorption spectrometric method,Pâtes — Détermination de la teneur en magnésium — Méthode par spectrométrie d'absorption atomique dans une flamme,1990-02-01,1,['85.040'],ISO/TC 6,9599,,[51848],"['en','fr']",3,"<p>Is applicable to all kinds of pulp, except pulps containing talc. The method specified involves the use of some hazardous chemicals and of gases that can form explosive mixtures with air.</p>"

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).