# ISO 5418-1:1994 — Withdrawn and superseded ISO standards

For ISO 5418-1:1994, item title is Iron ores — Determination of copper content — Part 1: 2,2'-Biquinolyl spectrophotometric method; status code is 9599; successor is ISO 5418-1:2006; withdrawn / published date is 1994-05-19, recorded from its source on 2026-08-05.

- **Identifier:** ISO 5418-1:1994 _(verified: appears in the quote below)_
- **Item title:** Iron ores — Determination of copper content — Part 1: 2,2'-Biquinolyl spectrophotometric method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 5418-1:2006
- **Withdrawn / published date:** 1994-05-19 _(verified: appears in the quote below)_

## What the source says

> 11461,IS,,ISO 5418-1:1994,"Iron ores — Determination of copper content — Part 1: 2,2'-Biquinolyl spectrophotometric method","Minerais de fer — Dosage du cuivre — Partie 1: Méthode spectrophotométrique à la biquinoléine-2,2'",1994-05-19,1,['73.060.10'],ISO/TC 102/SC 2,9599,[11460],[43946],"['en','fr']",9,"<p>The principle of the method specified is decomposition of the test portion by treatment with hydrochloric, nitric and perchloric acids, dehydration of silica, dilution and filtration, ignition of the residue, treatment with hydrofluoric and sulfuric acids, fusion with sodium carbonate, dissolution of the cooled melt in the filtrate, reduction of copper(II) to form the red-violet complex o

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).