JAPANESEINDUSTRIAL
STANDARD
Translated and Published byJapanese Standards Association

JIS K 6220-5: 2021(JRMA/JSA)

Rubber compounding ingredients ––Organic chemicals –– Part 5:
Test methods of organic peroxides

ICS 83.040.20
Reference number : JIS K 6220-5 : 2021 (E)
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23 S

K 6220-5 : 2021

Date of Establishment: 2021-12-20
Date of Public Notice in Official Gazette: 2021-12-20
Investigated by: Japanese Industrial Standards CommitteeStandards Board for ISO area
JIS K 6220-5 : 2021, First English edition published in 2023-04
Translated and published by: Japanese Standards Association
Mita MT Building, 3-13-12, Mita, Minato-ku, Tokyo, 108-0073 JAPANIn the event of any doubts arising as to the contents,
the original JIS is to be the final authority.
 JSA 2023
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 the publisher.
Printed in JapanHT/HN

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K 6220-5 : 2021
ContentsPageIntroduction ······························································································· 11Scope ································································································ 12

Normative references··········································································· 13

Terms and definitions ·········································································· 24Abbreviated terms and chemical names related to organic peroxides ············ 35General ····························································································· 36Sampling ··························································································· 37Groups and test methods of organic peroxides ·········································· 38

Determination of peroxyketal content (Method A) ····································· 49Determination of diacyl peroxide content (Method B)································· 710Determination of dialkyl peroxide content (Method C) ······························· 911Determination of DMBHa content (Method D) ·········································1112Precision ··························································································1213Test report························································································12Annex A (normative)

Determination of peroxyketal content ·····························14

Annex B (normative)

Determination of diacyl peroxide content ·························18

Annex C (normative)

Determination of dialkyl peroxide content ························20

Annex D (normative)

Determination of DMBHa content by gas chromatography ········································································22

Annex E (normative)

Sample preparation for determination of organic peroxides content in mixed test samples ·······························27

Annex F (informative)

Precision ··································································29

Annex JA (informative)

Comparison table between JIS and corresponding
International Standard ·············································32(i)PROTECTED BY COPYRIGHT

K 6220-5 : 2021

Foreword
This Japanese Industrial Standard has been established by the Ministerof Economy, Trade and Industry through deliberations at the JapaneseIndustrial Standards Committee according to the proposal for establishment of Japanese Industrial Standard submitted by The Japan Rubber
Manufacturers Association (JRMA)/Japanese Standards Association(JSA) with a draft being attached, based on the provision of Article 12,
paragraph (1) of the Industrial Standardization Act.
This JIS document is protected by the Copyright Act.
Attention is drawn to the possibility that some parts of this Standard
may conflict with patent rights, published patent application or utility
model rights. The relevant Minister and the Japanese Industrial Standards Committee are not responsible for identifying any of such patentrights, published patent application or utility model rights.
JIS K 6220 series consists of the following 5 parts under the general title
Rubber compounding ingredients — Organic chemicals — :Part 1 : General
Part 2 : Sulfenamide accelerators
Part 3 : p-Phenylenediamine antidegradants (PPDs)
Part 4 : Abbreviated terms
Part 5 : Test methods of organic peroxides(ii)
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JIS K 6220-5 : 2021

Rubber compounding ingredients — Organic chemicals —Part 5 : Test methods of organic peroxides
Introduction
This Japanese Industrial Standard has been prepared based on ISO 14932 : 2012,
Edition 1, with some modifications and additions of the technical contents to meet thelocal needs and conditions in Japan.
The vertical lines on both sides and dotted underlines indicate changes from the corresponding International Standard. A list of modifications with the explanations isgiven in Annex JA.
1

Scope

This Standard specifies methods for the determination of the content of the organic
peroxides used as rubber vulcanizing agents.
NOTE 1

Organic peroxides are generally diluted with inert solvents or inorganic
fillers for explosion protection and are also treated as master batches orthe like. Some of them exist as an undiluted single chemical, in whichcase the term “content” has the same meaning as assay.

NOTE 2The International Standard corresponding to this Standard and thesymbol of degree of correspondence are as follows.
ISO 14932 : 2012 Rubber compounding ingredients — Organic vulcanizing agents — Determination of organic peroxide content (MOD)In addition, symbols which denote the degree of correspondence in thecontents between the relevant International Standard and JIS are IDT(identical), MOD (modified), and NEQ (not equivalent) according toISO/IEC Guide 21-1.

WARNING Persons using this Standard should be familiar with normal laboratory
practice. This Standard does not purport to address all of the safety
problems, if any, associated with its use. It is the responsibility of theuser of this Standard to establish appropriate safety and health practices.
2

Normative references

The following standards contain provisions which, through reference in this text,
constitute provisions of this Standard. The most recent editions of the standards (including amendments) indicated below shall be applied.
JIS K 0050 General rules for chemical analysis
JIS K 0123 General rules for gas chromatography / mass spectrometry
JIS K 0211 Technical terms for analytical chemistry (General part)

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