# ISO 4686:1980 — Withdrawn and superseded ISO standards

For ISO 4686:1980, item title is Iron ores — Determination of silicon content — Reduced molybdosilicate spectrophotometric method; status code is 9599; successor is ISO 2598-2:1992; withdrawn / published date is 1980-02-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4686:1980 _(verified: appears in the quote below)_
- **Item title:** Iron ores — Determination of silicon content — Reduced molybdosilicate spectrophotometric method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 2598-2:1992
- **Withdrawn / published date:** 1980-02-01 _(verified: appears in the quote below)_

## What the source says

> 10665,IS,,ISO 4686:1980,Iron ores — Determination of silicon content — Reduced molybdosilicate spectrophotometric method,Minerais de fer — Dosage du silicium — Méthode spectrophotométrique au molybdosilicate réduit,1980-02-01,1,['73.060'],ISO/TC 102/SC 2,9599,,[10666],"['en','fr']",6,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).