British Standards Institution

Source:: ISO
Committee:: PRI/42 - Fibre reinforced thermosetting plastics and prepregs 15.05.2025 Title change from Fibre Reinforced Thermosetting to Fibre reinforced plastics and intermediates
Categories:: Thermosetting materials
Comment period start date:: 08/05/2025
Comment period end date:: 01/07/2025
Number of comments:: 6

Comment by:

1st Jul

Scope

This document 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. All the test methods are applicable to a variety of organic compounds, including aliphatic isocyanates, but the amount of sample used might need to be adjusted. These test methods can be used for research or for quality control.

NOTE This document is technically equivalent to ASTM D4661–03.

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Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

20/11/2024

3. Public Comments

Public Comments start date:

08/05/2025

Public Comments end date:

01/07/2025

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Standards Development

BS ISO 26603 ISO 26603 Plastics. Aromatic isocyanates for use in the production of polyurethanes. Determination of total chlorine

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