ISO 7431-2:2024
(Main)Thiourea for industrial use — Part 2: Specifications
Thiourea for industrial use — Part 2: Specifications
This document specifies requirements for three classes, marking, package, transport and storage of thiourea for industrial purpose. The different types of thiourea specified are defined according to their content, application, and requirements (see Table 1).
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INTERNATIONAL ISO
STANDARD 7431-2
First edition
Thiourea for industrial use —
Part 2:
Specifications
PROOF/ÉPREUVE
Reference number
ISO 7431-2:2023(E)
© ISO 2023
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ISO 7431-2:2023(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.
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Published in Switzerland
ii
PROOF/ÉPREUVE © ISO 2023 – All rights reserved
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ISO 7431-2:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Required characteristics . 1
5 Marking . . 2
6 Package, transport and storage .2
Bibliography . 3
iii
© ISO 2023 – All rights reserved PROOF/ÉPREUVE
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ISO 7431-2:2023(E)
Foreword
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
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).
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
constitute an endorsement.
For an explanation of the voluntary
...
ISO/DIS 7431-2:2023(E)
Style Definition: List Number 1: Tab stops: Not at
19.85 pt + 39.7 pt + 59.55 pt + 79.4 pt + 99.25 pt +
Date: 2023-08-1510-07 119.05 pt + 138.9 pt + 158.75 pt + 178.6 pt + 198.45
pt
ISO TC 47/WG 3
Style Definition: a2: Tab stops: 18 pt, List tab
Style Definition: a3: Tab stops: 36 pt, List tab
Secretariat: JISC
Style Definition: a4: Tab stops: 54 pt, List tab
Thiourea for industrial use — Part 2: Specifications
Style Definition: a5: Tab stops: 54 pt, List tab
Style Definition: a6: Tab stops: 72 pt, List tab
Style Definition: ハッシュタグ1
Style Definition: メンション1
Style Definition: スマート ハイパーリンク1
Style Definition: 未解決のメンション1
Style Definition: AMEND Terms Heading: Pattern: 15%
Style Definition: AMEND Heading 1 Unnumbered:
Pattern: 15%
Formatted: Font: 11.5 pt, Italian (Italy)
Formatted: Italian (Italy)
Formatted: Font: 11.5 pt, Italian (Italy)
Formatted: Italian (Italy)
© ISO 2023 – All rights reserved 1
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ISO/DIS 7431-2:2023(E)
Formatted: Font: 11.5 pt
Formatted: Font: 11.5 pt
Formatted: Font: 11.5 pt, English (United Kingdom)
© ISO 2023
Formatted: Font: 11.5 pt
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part
Formatted
of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or
Formatted: English (United Kingdom)
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: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/DIS 7431-2:2023(E)
Formatted: Font: 11.5 pt
Formatted: Font: 11.5 pt
Formatted: Font: 11.5 pt, English (United Kingdom)
Contents
Formatted: Font: 11.5 pt
Foreword . iv
Introduction. v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Required characteristics . 1
5 Marking . 2
6 Package, transport and storage. 2
Bibliography . 3
Foreword . iv
Introduction. v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Required characteristics . 1
5 Marking . 2
6 Package, transport and storage. 2
Bibliography
...
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