NF ISO 14932, T45-032 (09/2023)

This document specifies four methods for determining the content of organic peroxides of the following groups 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-butyleperoxy)cyclohexane (DTBPC; CAS Registry Number®3006-86-8) 1,1-Di(tert-butyleperoxy)-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-butyleperoxy)butane (DBPB; CAS RN 2167-23-9); butyl 4,4-di(tert-butyleperoxy)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 peroxides and alkyl and aralkyl peroxides: Di(tert-butyleperoxyisopropyl)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, on capillary column or on packed column. 2,5-Dimethyl-2,5-di(tert-butyleperoxy)hexane (CAS 78-63-7)
(Automatic translation from French)