IEC TS 62565-2-1:2026

Nanomanufacturing - Product specification - Part 2-1: Carbon nanotube-related products - Blank detail specification: single-walled carbon nanotubes in powders and dispersions

IEC TS 62565-2-1:2026 which is a Technical Specification, establishes a blank detail specification and format for listing the relevant key control characteristics (KCCs) of single wall carbon nanotubes (SWCNTs). This document is intended to be used for SWCNTs in the form of powders and dispersions.
For each KCC listed, methods and existing standards (in cases where they are applicable) for their measurement are indicated. Numeric values to be specified for the properties and characteristics are intentionally left blank and are determined by agreement between customer and supplier. Properties and characteristics not of relevance for a specific application can be classified as not applicable or not specified.

General Information

• Status: Published
• Publication Date: 06-May-2026
• ICS: 07.030 - Physics. Chemistry
• ICS: 07.120 - Nanotechnologies
• Technical Committee: TC 113 - Nanotechnology for electrotechnical products and systems
• Drafting Committee: WG 8 - TC 113/WG 8
• Current Stage: PPUB - Publication issued
• Start Date: 07-May-2026
• Completion Date: 17-Apr-2026

Relations

• Revises: IEC PAS 62565-2-1:2011 - Nanomanufacturing - Material specifications - Part 2-1: Single-wall carbon nanotubes - Blank detail specification
• Effective Date: 05-Sep-2023

Overview

IEC TS 62565-2-1:2026 sets out a standardized approach for specifying single-walled carbon nanotube (SWCNT) products in powder and dispersion forms. Developed by the International Electrotechnical Commission (IEC), this technical specification provides a blank detail specification (BDS) format detailing relevant key control characteristics (KCCs) of SWCNTs. The KCCs, along with their measurement methods and corresponding standards where available, facilitate clear communication between suppliers and customers. By standardizing how SWCNT characteristics are specified and assessed, this document supports reproducibility, quality assurance, and efficiency across the nanomanufacturing supply chain.

Key Topics

• Blank Detail Specification (BDS): Structured template for listing KCCs without pre-set numeric values.
• Key Control Characteristics (KCCs): Product features that affect quality, safety, functionality, and regulatory compliance.
• Specification Formats: Recommended tables for documenting SWCNT powders, dispersions, and derivative films or sheets.
• Measurement Procedures: Identification of applicable standards or good practices for each KCC; documentation of standardization maturity levels (SML).
• Supplier-Customer Agreements: Numeric values for KCCs are determined through negotiation, enabling customization for diverse applications.
• Traceability & Documentation: Emphasizes clear recording of production batches, materials safety data, and procurement information.

Applications

IEC TS 62565-2-1:2026 delivers practical advantages for various stakeholders in the nanomanufacturing value chain, especially those working with single-walled carbon nanotubes in electrical, electronic, and advanced materials sectors:

• Quality Control: Manufacturers can consistently specify and control key material features, supporting reliable and reproducible product performance.
• Material Procurement: Buyers can compare SWCNT products based on harmonized specifications, facilitating effective sourcing and material benchmarking.
• Custom Product Development: Enables customized SWCNT specifications to support application-specific requirements (e.g., electronics, sensors, composites).
• Contractual Clarity: Acts as a template for drafting bilateral procurement agreements, clearly defining required characteristics and their validation methods.
• Facilitating Innovation: Standardized assessment and transparent reporting of SWCNT characteristics accelerate the adoption and integration of nanomaterials in new applications.
• Supporting Compliance: Identifies where applicable measurement standards exist, helping ensure adherence to industry best practices and regulatory guidelines.

Related Standards

For comprehensive nanomanufacturing product specifications and SWCNT characterization, the following standards are closely related or referenced:

• IEC TS 62607-2-1 – Nanotechnologies – Key control characteristics – Part 2-1: Measurement of electrical properties of carbon nanotubes.
• ISO/TS 10867:2019 – Nanotechnologies – Characterization of SWCNTs using near infrared photoluminescence spectroscopy.
• ISO/TS 11308 – Characterization of carbon nanotube samples using thermogravimetric analysis.
• ISO/TS 10798:2011 – Characterization of SWCNTs using scanning electron microscopy.
• ISO/TS 13278 – Characterization of metal impurities in carbon nanotubes.
• ISO/TS 9277 – Determination of the specific surface area.

Visit the IEC and ISO online portals for more details on these and other nanotechnologies standards, ensuring up-to-date reference and compliance with evolving industry guidelines.

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By using IEC TS 62565-2-1:2026, organizations enhance the quality, traceability, and performance of products involving single-walled carbon nanotubes, driving consistent innovation and trust in global nanomanufacturing.

Standards Content (Sample)

IEC TS 62565-2-1 ®
Edition 1.0 2026-05
TECHNICAL
SPECIFICATION
Nanomanufacturing - Product specification -
Part 2-1: Carbon nanotube-related products - Blank detail specification: single-
walled carbon nanotubes in powders and dispersions
ICS 07.120; 07.030 ISBN 978-2-8327-1148-4

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CONTENTS
FOREWORD . 2
INTRODUCTION . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General introduction regarding measurement methods . 6
5 Recommended single-wall carbon nanotubes specification format . 6
5.1 General procurement information . 6
5.2 KCCs of SWCNT powders . 7
5.3 KCCs of SWCNTs dispersions . 8
5.4 KCCs of SWCNT films and sheets made from SWCNT powders or
dispersions . 8
6 Test methods overview . 9
Annex A (informative) Basic information for specifying SWCNT structure . 10
Bibliography . 12

Figure A.1 – Two-dimensional graphene sheet with vectors defining chirality . 10
Figure A.2 – Example of armchair tube where θ = 30° direction, θ as defined in
Table A.1 (view perpendicular to the CNT axis) . 10
Figure A.3 – Example of zigzag tube where θ = 0° direction, θ as defined in Table A.1,
(view perpendicular to the CNT axis) . 11

Table 1 – Format for general information . 7
Table 2 – Format for specifying KCCs for SWCNT powders . 7
Table 3 – Format for KCCs of SWCNT dispersions. 8
Table 4 – Format for KCCs of SWCNT films . 9
Table A.1 – Parameters of single-wall carbon nanotubes [1] . 11

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Nanomanufacturing - Product specification -
Part 2-1: Carbon nanotube-related products - Blank detail specification:
single-walled carbon nanotubes in powders and dispersions

FOREWORD
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC 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, IEC had not received notice of (a) patent(s), which
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the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC TS 62565-2-1 has been prepared by IEC technical committee 113: Nanotechnology for
electrotechnical products and systems. It is a Technical Specification.
The text of this Technical Specification is based on the following documents:
Draft Report on voting
113/941/DTS 113/965/RVDTS
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Specification is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 62565 series, published under the general title Nanomanufacturing
– Product specification, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
INTRODUCTION
This document is intended to provide guidance on how to list, illustrate and define various
characteristics of single-wall carbon nanotubes (SWCNTs) for use in electrotechnical products,
and how to incorporate these into a bilateral detail specification between vendor and user. A
particular point of interest is the fact that there are many different types (diameter, chirality) of
SWCNTs and various treatments for chemical modification have been developed. Subtle
differences in the physical structure give rise to marked differences in electrical, optical and
chemical properties; therefore it is important to pay these characteristics special attention.
To permit common processing equipment and common unit processes with predictable and
reproducible results to be used in multiple fabrication lines, it is essential for the carbon
nanotube characteristics to be described and assessed in a standardized manner and to
standardize the methods for quality control of the manufacturing processes.
To facilitate a reliable source of carbon nanotubes with tailored properties (length, diameter,
purity, chirality, conduction type), it is important to specify the characteristics in a standardized
way, stating the specification limits and the characterization methods to prove conformance.
Accurately measuring and assessing the quality of nanotube-containing materials and the
dispersion of nanotubes in liquids or polymers, are both considered crucial for the continued
growth of applications incorporating single-wall carbon nanotubes. Although a range of SWCNT
powders and dispersions are commercially available, the specifications for these products vary
significantly. Some suppliers provide specifications of many parameters along with the methods
of measurement used while others only report a minimal set of numbers with no indication of
how these were measured. For this reason, comparison and specification of the quality of CNT
materials is extremely difficult. While much progress in development of SWCNT characterization
measurements has been made [1] [2] [3] , significant improvements are still crucial to assess
the quality of carbon nanotube-containing materials and the protocol for doing so (e.g. how to
describe the characteristics relevant for the quality of the final nano-enabled products).
In addition to providing guidance for materials suppliers and users for how to draft bilateral
procurement contracts, this BDS can also serve as a roadmap for the future development of
KCC measurement standards for SWCNTs.

___________
Numbers in square brackets refer to the Bibliography.
1 Scope
This part of IEC 62565 establishes a blank detail specification and format for listing the relevant
key control characteristics (KCCs) of single-wall carbon nanotubes (SWCNTs). This document
is intended to be used for SWCNTs in the form of powders and dispersions.
For each KCC listed, methods and existing standards (in cases where they are applicable) for
their measurement are indicated. Numeric values to be specified for the properties and
characteristics are intentionally left blank and are determined by agreement between customer
and supplier. Properties and characteristics not of relevance for a specific application can be
classified as not applicable or not specified.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
– IEC Electropedia: available at https://www.electropedia.org/
– ISO Online browsing platform: available at https://www.iso.org/obp
3.1
key control characteristic
KCC
product characteristic which can affect safety or compliance with regulations, fit, function,
performance, quality, reliability or subsequent proce
...