ISO 14932:2023

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

Publication date:   Aug 11, 2023

General information

60.60 Standard published   Aug 11, 2023

ISO

ISO/TC 45/SC 3 Raw materials (including latex) for use in the rubber industry

International Standard

83.040.20   Rubber compounding ingredients

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Scope

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)

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 14932:2012

NOW

PUBLISHED
ISO 14932:2023
60.60 Standard published
Aug 11, 2023