# ISO 4691:1985 — Withdrawn and superseded ISO standards

For ISO 4691:1985, item title is Iron ores — Determination of titanium content — Diantipyrylmethane spectrophotometric method; status code is 9599; successor is ISO 4691:2009; withdrawn / published date is 1985-12-19, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4691:1985 _(verified: appears in the quote below)_
- **Item title:** Iron ores — Determination of titanium content — Diantipyrylmethane spectrophotometric method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4691:2009
- **Withdrawn / published date:** 1985-12-19 _(verified: appears in the quote below)_

## What the source says

> 10673,IS,,ISO 4691:1985,Iron ores — Determination of titanium content — Diantipyrylmethane spectrophotometric method,Minerais de fer — Dosage du titane — Méthode spectrophotométrique au diantipyrylméthane,1985-12-19,1,['73.060.10'],ISO/TC 102/SC 2,9599,,[45796],"['en','fr']",10,"<p>The method ist applicable to a concentration range of 0,01 to 6,0 % (m/m) of titanium in natural iron ores, and iron ore concentrates and agglomerates including sinter products. Specifies principle, reagents, apparatus, sampling and samples, procedure, expression of results, and test report. ISO 4691 includes three annexes.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).