# ISO 26603:2017 — Withdrawn and superseded ISO standards

For ISO 26603:2017, item title is Plastics — Aromatic isocyanates for use in the production of polyurethanes — Determination of total chlorine; status code is 9599; successor is ISO 26603:2026; withdrawn / published date is 2017-03-02, recorded from its source on 2026-08-05.

- **Identifier:** ISO 26603:2017 _(verified: appears in the quote below)_
- **Item title:** Plastics — Aromatic isocyanates for use in the production of polyurethanes — Determination of total chlorine _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 26603:2026
- **Withdrawn / published date:** 2017-03-02 _(verified: appears in the quote below)_

## What the source says

> 72472,IS,,ISO 26603:2017,Plastics — Aromatic isocyanates for use in the production of polyurethanes — Determination of total chlorine,Plastiques — Isocyanates aromatiques utilisés pour la production de polyuréthannes — Dosage du chlore total,2017-03-02,2,['83.080.10'],ISO/TC 61/SC 12,9599,[43623],[91004],['en'],9,"<p>ISO 26603:2017 specifies the determination of the total chlorine content of aromatic isocyanates used in the preparation of polyurethanes. The difference between the total chlorine content and the hydrolyzable chlorine content (see ISO 15028) is a measure of the process solvents left in the product. Both test methods are applicable to a variety of organic compounds, including al

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).