# ISO/PAS 22241-1:2005 — Withdrawn and superseded ISO standards

For ISO/PAS 22241-1:2005, item title is Diesel engines — NOx reduction agent AUS 32 — Part 1: Quality requirements; status code is 9599; successor is ISO 22241-1:2006; withdrawn / published date is 2005-11-07, recorded from its source on 2026-08-05.

- **Identifier:** ISO/PAS 22241-1:2005 _(verified: appears in the quote below)_
- **Item title:** Diesel engines — NOx reduction agent AUS 32 — Part 1: Quality requirements _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 22241-1:2006
- **Withdrawn / published date:** 2005-11-07 _(verified: appears in the quote below)_

## What the source says

> 42853,PAS,,ISO/PAS 22241-1:2005,Diesel engines — NOx reduction agent AUS 32 — Part 1: Quality requirements,Moteurs diesel — Agent AUS 32 de réduction des NOx — Partie 1: Exigences de qualité,2005-11-07,1,['43.060.40'],ISO/TC 22,9599,,[40793],['en'],7,"<p>ISO PAS 22241-1:2005 specifies the quality characteristics of the NOx reduction agent AUS 32 (<b>a</b>queous <b>u</b>rea <b>s</b>olution) which is needed to operate converters with selective catalytic reduction, so-called SCR (Selective Catalytic Reduction) converters, in motor vehicles with Diesel engines. SCR converters are particularly suitable for selectively reducing the nitrogen oxide (NO<sub>x</sub>) emissions of Diesel engines. </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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).