ISO 15028:2004

INTERNATIONAL ISO
STANDARD 15028
First edition
2004-07-15

Plastics — Aromatic isocyanates for use
in the production of polyurethanes —
Determination of hydrolysable chlorine
Plastiques — Isocyanates aromatiques pour utilisation dans la
production de polyuréthannes — Détermination du chlore hydrolysable




Reference number
ISO 15028:2004(E)
©
ISO 2004

---------------------- Page: 1 ----------------------
ISO 15028:2004(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.


©  ISO 2004
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland

ii © ISO 2004 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 15028:2004(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 15028 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12, Thermosetting
materials.
© ISO 2004 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO 15028:2004(E)
Introduction
No International Standard for the determination of hydrolysable chlorine in isocyanates has been published.
The main sources of hydrolysable chlorine in isocyanates are carbamoyl chloride and dissolved phosgene
from the manufacturing process. Both of these compounds react with alcohols and water, forming ureas,
carbamates, carbon dioxide and hydrochloric acid. These acidic materials neutralize basic catalysts used in
polyurethane production, thus adversely affecting processing properties. This test method is based on and is
technically equivalent to ASTM D 4663-98, Standard Test Method for Polyurethane Raw Materials:
Determination of Hydrolyzable Chlorine of Isocyanates.

iv © ISO 2004 – All rights reserved

---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 15028:2004(E)

Plastics — Aromatic isocyanates for use in the production of
polyurethanes — Determination of hydrolysable chlorine
WARNING — Persons using this International Standard should be familiar with normal laboratory
practice. This standard does not purport to address all of the safety problems, if any, associated with
its use. It is the responsibility of the user of this standard to establish appropriate safety and health
practices and to ensure compliance with any national regulatory conditions prior to use.
1 Scope
This International Standard specifies a method for the determination of the hydrolysable-chlorine content of
toluene-2,4-diisocyanate, toluene-2,6-diisocyanate or mixtures of the two. This test method may also be
applied to other isocyanates of suitable solubility, such as crude or refined polymeric isocyanates.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 385-1, Laboratory glassware — Burettes — Part 1: General requirements
ISO 648, Laboratory glassware — One-mark pipettes
ISO 3696:1987, Water for analytical laboratory use — Specification and test methods
ISO 4787, Laboratory glassware — Volumetric glassware — Methods for use and testing of capacity
ISO 6353-2, Reagents for chemical analysis — Part 2: Specifications — First series
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
TDI
toluenediisocyanate
3.2
polyurethane
polymer prepared by the reaction of an organic di- or polyisocyanate with compounds containing two or more
hydroxyl groups
3.3
hydrolysable chlorine
organic or inorganic chlorine compounds formed in the production of isocyanates that react with methanol
...