ISO 80000-9:2009/AMD1:2011
(Amendment)Amendment 1 - Quantities and units - Part 9: Physical chemistry and molecular physics
Amendment 1 - Quantities and units - Part 9: Physical chemistry and molecular physics
Defines ways for new microprocessor systems to perform binary floating point arithmetic in software, in hardware or in any combination of hardware and software.[
]Note: -For the price of this publication, please consult the ISO/IEC price-code list.
General Information
- Status
- Published
- Publication Date
- 31-May-2011
- Technical Committee
- TC 25 - Quantities and units
- Current Stage
- DELPUB - Deleted Publication
- Start Date
- 28-Aug-2019
- Completion Date
- 26-Oct-2025
Relations
- Effective Date
- 05-Sep-2023
- Effective Date
- 05-Sep-2023
Overview
ISO 80000-9:2009/AMD1:2011 is an important amendment to the international standard defining quantities and units in physical chemistry and molecular physics. Prepared by ISO technical committee ISO/TC 12 in collaboration with IEC/TC 25, this amendment refines symbols, notations, and related conventions used in the precise measurement and communication of physical chemistry data. It aims to enhance clarity and consistency in scientific and technical documentation across global research and industrial applications involving molecular physics and chemical quantities.
This amendment builds on the foundational ISO 80000-9:2009 standard, addressing updates to the use of chemical element symbols, nuclide notation, and related annotations to standardize reporting formats for atomic and molecular properties.
Key Topics
Chemical Element Symbols
Chemical elements must be denoted using roman (upright) font with a capital initial letter, optionally followed by a lowercase letter. For example: H, As, Th. Symbols are not followed by a period unless at the end of a sentence.Nuclide Notation
- Left superscript: Nucleon (mass) number (e.g., ¹⁴N)
- Left subscript: Atomic (proton) number (e.g., ⁶⁴Gd)
- Right subscript: Number of atoms in a molecule (e.g., ¹⁴N₂)
- Right superscript: State of ionization or electrical excitation (e.g., Na⁺³, PO₄³⁻, He*, NO*)
- Left superscript with an asterisk denotes nuclear excitation; ‘m’ following the mass number indicates a metastable nuclide (e.g., ¹³³mXe).
Amendments and Clarifications
Updates include revision to remarks on quantities in physical chemistry, correction of bibliographic references, removal of outdated footnotes, and replacement of Annex B to provide detailed normative guidance on symbol usage.Standardization Collaboration
The amendment reflects coordination between ISO and IEC, ensuring international coherence in quantities and units related to molecular and atomic physics fields.
Applications
Scientific Research
Enables scientists in physical chemistry and molecular physics to use internationally accepted symbols and units, ensuring unambiguous communication of results.Education and Publishing
Serves as an authoritative source for educators and publishers in chemistry, providing clear guidelines for the consistent representation of chemical quantities.Industrial Measurement and Instrumentation
Supports engineers and technologists designing measurement instruments and software for chemical analysis, guaranteeing standardized data interpretation and exchange.Nuclear Physics and Analytical Chemistry
Facilitates precise notation of isotopes, ionization states, and molecular configurations necessary for nuclear research, medical diagnostics, and materials testing.
Related Standards
ISO 80000-1:2009 - Quantities and units - Part 1: General principles
Provides the overarching framework and fundamental rules for quantities and units used in subsequent parts.ISO 80000-10:2009 - Quantities and units - Part 10: Atomic and nuclear physics
Complements Part 9 by standardizing units and quantities specifically related to atomic structure and nuclear phenomena.ISO/IEC Directives, Part 2
Governs the drafting and structure of ISO and IEC International Standards, under which this amendment was developed.
Practical Value
Implementing ISO 80000-9:2009/AMD1:2011 ensures accurate, consistent representation of physical chemistry quantities worldwide. This reduces misinterpretations and errors in scientific communication, documentation, and automated processing of molecular physics data. Professionals relying on precise chemical symbols and units - including academic researchers, industrial chemists, and software developers working on scientific computation - benefit from harmonized standards that facilitate interoperability and data exchange across disciplines and countries.
For the latest pricing and purchasing details, consult the official ISO or IEC price-code lists available through ISO’s website at www.iso.org.
Keywords: ISO 80000-9 amendment, physical chemistry units standard, molecular physics notation, chemical element symbols, nuclide notation, physical chemistry quantities, IEC collaboration, international chemical standards, scientific measurement units
ISO 80000-9:2009/AMD1:2011 - Amendment 1 - Quantities and units - Part 9: Physical chemistry and molecular physics Released:6/1/2011
ISO 80000-9:2009/AMD1:2011 - Amendment 1 - Quantities and units - Part 9: Physical chemistry and molecular physics Released:6/1/2011
Frequently Asked Questions
ISO 80000-9:2009/AMD1:2011 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Amendment 1 - Quantities and units - Part 9: Physical chemistry and molecular physics". This standard covers: Defines ways for new microprocessor systems to perform binary floating point arithmetic in software, in hardware or in any combination of hardware and software.[<BR>]Note: -For the price of this publication, please consult the ISO/IEC price-code list.
Defines ways for new microprocessor systems to perform binary floating point arithmetic in software, in hardware or in any combination of hardware and software.[<BR>]Note: -For the price of this publication, please consult the ISO/IEC price-code list.
ISO 80000-9:2009/AMD1:2011 is classified under the following ICS (International Classification for Standards) categories: 01.060 - Quantities and units; 31.080 - Semiconductor devices. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 80000-9:2009/AMD1:2011 has the following relationships with other standards: It is inter standard links to ISO 80000-9:2009, ISO 80000-9:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ISO 80000-9:2009/AMD1:2011 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 80000-9
First edition
2009-04-01
AMENDMENT 1
2011-06-01
Quantities and units —
Part 9:
Physical chemistry and molecular
physics
AMENDMENT 1
Grandeurs et unités —
Partie 9: Chimie physique et physique moléculaire
AMENDEMENT 1
Reference number
ISO 80000-9:2009/Amd.1:2011(E)
©
ISO 2011
ISO 80000-9:2009/Amd.1:2011(E)
© ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved
ISO 80000-9:2009/Amd.1:2011(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 committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
Amendment 1 to ISO 80000-9:2009 was prepared by Technical Committee ISO/TC 12, Quantities and units,
in collaboration with IEC/TC 25, Quantities and units.
ISO 80000-9:2009/Amd.1:2011(E)
Quantitie
...
NORME ISO
INTERNATIONALE 80000-9
Première édition
2009-04-01
AMENDEMENT 1
2011-06-01
Grandeurs et unités —
Partie 9:
Chimie physique et physique moléculaire
AMENDEMENT 1
Quantities and units —
Part 9: Physical chemistry and molecular physics
AMENDMENT 1
Numéro de référence
ISO 80000-9:2009/Amd.1:2011(F)
©
ISO 2011
ISO 80000-9:2009/Amd.1:2011(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2011
Droits de reproduction réservés. Sauf prescription différente, aucune partie de cette publication ne peut être reproduite ni utilisée sous
quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord écrit
de l'ISO à l'adresse ci-après ou du comité membre de l'ISO dans le pays du demandeur.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Publié en Suisse
ii © ISO 2011 – Tous droits réservés
ISO 80000-9:2009/Amd.1:2011(F)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux de
normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général confiée
aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire partie du
comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec
la Commission électrotechnique internationale (CEI) en ce qui concerne la normalisation électrotechnique.
Les Normes internationales sont rédigées conformément aux règles données dans les Directives ISO/CEI,
Partie 2.
La tâche principale des comités techniques est d'élaborer les Normes internationales. Les projets de Normes
internationales adoptés par les comités techniques sont soumis aux comités membres pour vote. Leur
publication comme Normes internationales requiert l'approbation de 75 % au moins des comités membres
votants.
L'attention est appelée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable de ne
pas avoir identifié de tels droits de propriété et averti de leur existence.
L'Amendement 1 à l'ISO 80000-9:2009 a été élaboré par le comité technique ISO/TC 12, Grandeurs et unités,
en collaboration avec le comité d'études CEI/CE 25, Grandeurs et unités.
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