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STANDARD 14900
Third edition
2023-12
Plastics — Polyols for use in the
production of polyurethanes —
Determination of hydroxyl number
Plastiques — Polyols pour la production de polyuréthanne —
Détermination de l'indice d'hydroxyle
Reference number
ISO 14900:2023(E)
© ISO 2023
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ISO 14900:2023(E)
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© ISO 2023
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Published in Switzerland
ii
© ISO 2023 – All rights reserved
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ISO 14900:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Interferences . 2
6 Reagents . 2
7 Apparatus . 4
8 Method A — Acetylation . 5
8.1 Procedure . 5
8.2 Expression of results . . 7
8.3 Precision and bias . 8
8.4 Test report . 8
9 Method B — Phthalation . 9
9.1 Procedure . 9
9.2 Expression of results . . 10
9.3 Precision and bias .
...