# ISO 553:1981 — Withdrawn and superseded ISO standards

For ISO 553:1981, item title is Manganese ores — Determination of vanadium content — Titrimetric method and phosphotungstovanadate photometric method; status code is 9599; successor is ISO/CD 553; withdrawn / published date is 1981-11-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 553:1981 _(verified: appears in the quote below)_
- **Item title:** Manganese ores — Determination of vanadium content — Titrimetric method and phosphotungstovanadate photometric method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/CD 553
- **Withdrawn / published date:** 1981-11-01 _(verified: appears in the quote below)_

## What the source says

> 4633,IS,,ISO 553:1981,Manganese ores — Determination of vanadium content — Titrimetric method and phosphotungstovanadate photometric method,Minerais de manganèse — Dosage du vanadium — Méthode titrimétrique et méthode photométrique à l'état de phospho-vanado-tungstate,1981-11-01,2,['73.060.20'],ISO/TMBG,9599,,[4634],"['en','fr']",4,"<p>Method I is applicable to manganese ores having vanadium contents greater than 0.05 % (m/m), method II is applicable to manganese ores having vanadium contents less than 0.05 % (m/m). This second edition cancels and replaces the first edition (i.e. ISO 553-1975). Should be read in conjunction with ISO 4297.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).