ISO 14932:2023

Rubber compounding ingredients — Organic vulcanizing agents — Determination of organic peroxide content

This document specifies four methods for the determination of the content of the following groups of organic peroxides used as rubber vulcanizing agents. There are three titration methods and one gas-chromatography method.

a)?????? titration method?A for group?a: Peroxyketals:

1,1-Di(tert-butylperoxy)cyclohexane (DTBPC; CAS Registry Number^?:3006-86-8)

1,1-Di(tert-butylperoxy)-2-methylcyclohexane (DBPMC; CAS RN?147217-40-1);

1,1-Di(tert-butylperoxy)-3,3,5-trimethylcylcohexane (DBPTC; CAS RN?6731-36-8);

2,2-Di(tert-butylperoxy)butane (DBPB; CAS RN?2167-23-9);

Butyl -4,4-di(tert-butylperoxy)valerate (BPV; CAS RN?995-33-5);

b)?????? titration method?B for group?b: Diacyl peroxides:

Dibenzoyl peroxide (CAS RN?94-36-0);

Di(2,4-dichlorobenzoyl) peroxide (CAS RN?133-14-2);

Di(4-methylbenzoyl) peroxide (CAS RN?895-85-2);

c)??????? titration method?C for group?c: Diaralkyl and alkyl-aralkyl peroxides:

Di(tert-butylperoxyisopropyl)benzene (CAS RN?2212-81-9);

Dicumyl peroxide (CAS RN?80-43-3);

tert-Butyl cumyl peroxide (CAS RN?3457-61-2);

d)?????? gas-chromatography for dialkyl peroxides, using a capillary or packed column.

2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane (CAS RN 78-63-7)

Edition	2023
Published Date	2023
Published By	International Standardization Organisation
Page Count	31