ISO 15028:2014

INTERNATIONAL ISO
STANDARD 15028
Second edition
2014-02-15
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 2014
© ISO 2014
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ii © ISO 2014 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Interference . 2
6 Sampling . 2
7 Test conditions . 2
8 Reagents . 2
9 Apparatus . 2
10 Procedure. 3
11 Expression of results . 3
12 Precision and bias . 3
12.1 Precision . 3
12.2 Bias . 4
13 Test report . 4
Bibliography . 5
Foreword
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electrotechnical standardization.
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The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 12, Thermosetting
materials.
This second edition cancels and replaces the first edition (ISO 15028:2004), which has been technically
revised.
iv © ISO 2014 – All rights reserved

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.
INTERNATIONAL STANDARD ISO 15028:2014(E)
Plastics — Aromatic isocyanates for use in the production
of polyurethanes — Determination of hydrolysable
chlorine
SAFETY STATEMENT — Persons using this document should be familiar with normal laborat
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