ISO 14900:2023

Plastics — Polyols for use in the production of polyurethanes — Determination of hydroxyl number

This document specifies two methods for the measurement of the hydroxyl number of polyols used as polyurethane raw materials. The hydroxyl content of polyols are determined to properly formulate polyurethane systems. Method A is primarily applicable to readily esterified polyether polyols. It is also intended for polyols which have significant steric hindrance, such as those based on sugars. Method B is intended for polyether polyols, polymer polyols and amine-initiated polyols, but can give low results for sterically hindered polyols. Other polyols can be analysed by these methods if precautions are taken to verify applicability. These methods can be used for research and for quality control and specification purposes.

Plastiques — Polyols pour la production de polyuréthanne — Détermination de l'indice d'hydroxyle

General Information

• Status: Published
• Publication Date: 11-Dec-2023
• ICS: 83.080.10 - Thermosetting materials
• Technical Committee: ISO/TC 61/SC 12 - Thermosetting materials
• Drafting Committee: ISO/TC 61/SC 12 - Thermosetting materials
• Current Stage: 6060 - International Standard published
• Start Date: 12-Dec-2023
• Due Date: 14-Sep-2024
• Completion Date: 12-Dec-2023

Relations

• Revises: ISO 14900:2017 - Plastics — Polyols for use in the production of polyurethane — Determination of hydroxyl number
• Effective Date: 17-Sep-2022

Standards Content (Sample)

INTERNATIONAL ISO
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

---------------------- Page: 1 ----------------------
ISO 14900:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
  © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
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 .
...

INTERNATIONAL ISO
STANDARD 14900
Third edition
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
PROOF/ÉPREUVE
Reference number
ISO 14900:2023(E)
© ISO 2023

---------------------- Page: 1 ----------------------
ISO 14900:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
PROOF/ÉPREUVE © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
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 .
...

Style Definition
ISO /PRF 14900:2023(E)
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ISO /TC 61/SC 12/WG 6
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Date: 2023-03-1410-26
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cm
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
FDIS stage
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© ISO 2023 – All rights reserved

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ISO/DIS PRF 14900:2023(E)
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publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, Before: 0 pt, No page break before, Adjust space
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including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can
Asian text and numbers
be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Formatted: French (Switzerland)
EmailE-mail: [e-mail]
Formatted: French (Switzerland)
Website: www.iso.orgwww.iso.org
Formatted: French (Switzerland)
Published in Switzerland
Formatted: Space After: 0 pt, Line spacing: single
Formatted: Font: 11 pt
Formatted: Font: 11 pt
Formatted: Font: 11 pt
ii © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/DIS PRF 14900:2023(E)
Formatted: Font: 11 pt, Bold
Formatted: Left, Space After: 0 pt, Line spacing: single
Formatted: Font: 11 pt, Bold
Contents
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
Foreword . v
Introduction . vi
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 . 4
8.1 Procedure . 4
8.2 Expression of results . 7
8.3 Precision and bias . 7
8.4 Test report .
...