ISO 5432:2022 レザー — ウェット ブルー シープ スキン — 仕様 | ページ 2

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.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, 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, 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 any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents ).

Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.

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This document was prepared by Technical Committee ISO/TC 120, Leather, Subcommittee SC 2, Tanned leather.

This third edition cancels and replaces the second edition (ISO 5432:2013), which has been technically revised.

The main changes are as follows:

• 'Chromic Oxide Content' and 'Matter soluble in dichloromethane' has been added in Chemical requirements in 4.6, Table 1;
• sample preparation method has been added in 6.3 and 6.4;
• determination of matter soluble in dichloromethane has been added as 6.6 in Test methods;
• type of material has been mentioned in 7.2 (a);
• values for 'pH of water extract' and 'Volatile matter' has been revised;
• normative references have been updated.

1 Scope

This document specifies requirements, sampling methods and testing methods for wet blue leather produced from sheep skins tanned without wool and with the use of basic chromium sulfate as the primary tanning agent.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

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:

Bibliography