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ISO 7270-2:2024

Rubber — Analysis by pyrolytic gas-chromatographic methods — Part 2: Determination of styrene/butadiene/isoprene ratio

General information

Valid from 24.05.2024
ICS Groups
83.060 Rubber
Directives or regulations
None

Standard history

Status
Date
Type
Name
24.05.2024
Main
ISO 7270-2:2024
13.09.2012
Main
ISO 7270-2:2012
This document specifies a pyrolytic gas-chromatographic method for the determination of the styrene/butadiene/isoprene ratio in copolymers, or blends of homopolymers and/or copolymers, in raw rubbers or in unvulcanized or vulcanized compounds. It is applicable to copolymers/terpolymers consisting of styrene, butadiene and isoprene, and blends of these polymers.
NOTE 1        The use of this document pre-supposes sufficient working knowledge of the principles and techniques of gas chromatography for the analyst to perform the operations described and interpret the results correctly.
NOTE 2        The styrene/butadiene/isoprene ratio determined by this test method is affected by the presence of resin and by a high level of sulfur.

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Standard monitoring
English (PDF 1,020 KB)

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Standards designation

EVS Estonian standard
EN European standard (published by an CEN or CENELEC)
EN ISO International standard adopted as an European standard
ISO International Organization for Standardization’s standard
IEC International Electrotechnical Commission’s standard
HD CENELEC’s harmonisation document
   
EVS-EN European standard implemented in Estonia
EVS-EN ISO International standard adopted in Europe and implemented in Estonia
EVS-EN ISO/IEC International standard/International electrotechnical standard adopted in Europe and implemented in Estonia
EVS-IEC International electrotechnical standard implemented in Estonia
EVS-ISO International standard implemented in Estonia
   
A, AMD amedment
+A a full standard plus the amendment
/A only amendment
COR, AC corrigendum
+COR a full standard plus the corrigendum
NA national annex
+NA a full standard plus the national annex
/NA only national annex
TS technical specification
TR technical report
CWA agreement, developed by a CEN or CENELEC
prEVS-EN (etc) draft standard
   
et the standard is in Estonian only
en the standard is in English only
et-en the standard is in Parallel text Estonian-English