ISO 3900:2023

Rubber — Nitrile latex — Determination of bound acrylonitrile content

This document specifies a method for the determination of the bound acrylonitrile content of emulsion-polymerized NBR lattices. The method is applicable to NBR lattices having a bound acrylonitrile content between 18 % and 45 %. It is also applicable to, for example, carboxylic-nitrile-butadiene (XNBR) lattices and nitrile-isoprene (NIR) lattices.

Caoutchouc — Latex de nitrile — Détermination de la teneur en acrylonitrile lié

General Information

• Status: Published
• Publication Date: 09-Jul-2023
• ICS: 83.040.10 - Latex and raw rubber
• Technical Committee: ISO/TC 45/SC 3 - Raw materials (including latex) for use in the rubber industry
• Drafting Committee: ISO/TC 45/SC 3 - Raw materials (including latex) for use in the rubber industry
• Current Stage: 6060 - International Standard published
• Start Date: 10-Jul-2023
• Due Date: 04-Dec-2023
• Completion Date: 10-Jul-2023

Relations

• Revises: ISO 3900:1995 - Rubber — Nitrile latex — Determination of bound acrylonitrile content
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 3900
Third edition
2023-07
Rubber — Nitrile latex —
Determination of bound acrylonitrile
content
Caoutchouc — Latex de nitrile — Détermination de la teneur en
acrylonitrile lié
Reference number
ISO 3900:2023(E)
© ISO 2023

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ISO 3900:2023(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
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ISO 3900:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 1
6 Apparatus . 2
7 Sampling and preparation of test sample . 2
8 Procedure .2
9 Expression of results . 2
10 Precision . 3
11 Test report . 3
Annex A (informative) Precision . 4
Bibliography . 6
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ISO 3900:2023(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
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electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
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Any trade name used in this document is information given for the convenience of users and does not
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For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products,
Subcommittee SC 3, Raw materials (including latex) for use in the rubber industry.
This third edition cancels and replaces the second edition (ISO 3900:1995), which has been technically
revised.
The main changes are as follows:
— addition of an introduction to explain the purpose of this revision;
— deletion of the note in Clause 1 and in Clause 4;
— update of the apparatus in Clause 5;
— in Clause 7, deletion of the preparation for dried film of NBR latex and addition of the preparation
dried NBR latex in accordance with ISO 24698-2;
— modification of the determination method of bound acrylonitrile content in accordance with the
macro-method in ISO 1656;
— update of the procedure and addition of the suitable determination conditions, in Clause 8;
— addition of the precision data in Annex A.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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ISO 3900:2023(E)
Introduction
Generally, the bound acrylonitrile content in nitrile latex is between 18 % and 45 %, expressed in the
nitrogen content in the range from 4,7 % to 11,9 %. In the previous version of this document, the bound
acrylonitrile content of emulsion-polymerized NBR lattices was determined in accordance with the
semi-micro method in ISO 1656. However, the semi-micro method is applicable to natural rubber and
natural rubber latex with lower nitrogen content; it is not applicable to determine nitrile latex. The
purpose of this document is to use the macro-method in ISO 1656 to determine the bound acrylonitrile
content in nitrile latex and to give the suitable determination conditions for nitrile latex.
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INTERNATIONAL STANDARD ISO 3900:2023(E)
Rubber — Nitrile latex — Determination of bound
acrylonitrile content
WARNING — Persons us
...