Rubber compounding ingredients — Carbon black — Determination of sulfur content

This document specifies two methods for the determination of the total sulfur in all types of carbon black for use in the rubber industry: — Method A, using a combustion furnace; — Method B, using an automatic analyser. With respect to safety aspects and test precision, it is preferable to use automatic systems. Method B is therefore the preferred method. Classical chemical analysis (Method A) is acceptable if automatic equipment is not available.

Ingrédients de mélange du caoutchouc — Noir de carbone — Dosage du soufre total

General Information

Status
Published
Publication Date
16-Jun-2022
Current Stage
6060 - International Standard published
Due Date
01-Nov-2023
Completion Date
17-Jun-2022
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ISO 1138:2022 - Rubber compounding ingredients — Carbon black — Determination of sulfur content Released:17. 06. 2022
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INTERNATIONAL ISO
STANDARD 1138
Third edition
2022-06
Rubber compounding ingredients —
Carbon black — Determination of
sulfur content
Ingrédients de mélange du caoutchouc — Noir de carbone — Dosage
du soufre total
Reference number
ISO 1138:2022(E)
© ISO 2022
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ISO 1138:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022

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 2022 – All rights reserved
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ISO 1138:2022(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ..................................................................................................................................................................................... 1

3 Terms and definitions .................................................................................................................................................................................... 1

4 Method A: Combustion furnace ............................................................................................................................................................ 1

4.1 Principle ....................................................................................................................................................................................................... 1

4.2 Reagents ....................................................................................................................................................................................................... 1

4.3 Apparatus .................................................................................................................................................................................................... 2

4.4 Procedure .................................................................................................................................................................................................... 2

4.5 Expression of results ........................................................................................................................................... .............................. 3

4.6 Test report .................................................................................................................................................................................................. 3

5 Method B: Automatic analyser .............................................................................................................................................................. 3

iii
© ISO 2022 – All rights reserved
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ISO 1138:2022(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 documents 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).

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. Details of

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on the ISO list of patent declarations received (see www.iso.org/patents).

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expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

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 ISO 1138:2007 and ISO 1138:2007/Amd 1:2012, which have

been technically revised.
The main changes are as follows:

— withdrawal of the method using an oxygen bomb calorimeter (previously called Method A) due to

the use of hazardous chemicals, and withdrawal of Amendment 1:2012 related to that method;

— addition of CAS numbers to the chemical reagents used in the current Method 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.
© ISO 2022 – All rights reserved
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INTERNATIONAL STANDA
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