# ISO 9455-9:1993 — Withdrawn and superseded ISO standards

For ISO 9455-9:1993, item title is Soft soldering fluxes — Test methods — Part 9: Determination of ammonia content; status code is 9599; successor is ISO 9455-9:2020; withdrawn / published date is 1993-04-15, recorded from its source on 2026-08-05.

- **Identifier:** ISO 9455-9:1993 _(verified: appears in the quote below)_
- **Item title:** Soft soldering fluxes — Test methods — Part 9: Determination of ammonia content _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 9455-9:2020
- **Withdrawn / published date:** 1993-04-15 _(verified: appears in the quote below)_

## What the source says

> 17176,IS,,ISO 9455-9:1993,Soft soldering fluxes — Test methods — Part 9: Determination of ammonia content,Flux de brasage tendre — Méthodes d'essai — Partie 9: Dosage de l'ammoniac,1993-04-15,1,['25.160.50'],ISO/TC 44/SC 12,9599,,[81061],"['en','fr']",4,"<p>The principle of the method specified is to distil a prepared flux solution with sodium hydroxide to expel the ammonia present in the flux, to pass the resulting distillate into a standard sulfuric acid solution, to titrate the excess acid with sodium hydroxide solution and to calculate the ammonia content of the flux. Applies to fluxes of class 3.1.1 only, as defined in ISO 9454-1.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).