ISO 19242:2021 PDF
Rubber — Determination of total sulfur content by ion chromatography
Rubber — Determination of total sulfur content by ion chromatography
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 15
- Дата публикации:
- 7 октября 2021 г.
- Издание:
- ISO IS 19242 edition 2 version 1
- ICS:
- 83.060
This document specifies a method for the determination of the total sulfur content of raw rubber and unvulcanized or vulcanized rubber compounds by ion chromatography following the preparation of a sample solution using either a tubular furnace combustion or an oxygen combustion flask method. The tubular furnace combustion method is applicable for rubbers with sulfur content less than 0,1 % as it is possible that the oxygen combustion flask method will not give sufficiently accurate results. The oxygen combustion flask method is not applicable to rubbers containing a metal salt that forms an insoluble metal sulfate, such as barium sulfate (CAS 7727‑43‑7).
Abstract
Overview
ISO 19242:2021 specifies a laboratory method for determining the total sulfur content in raw, unvulcanized or vulcanized rubber using ion chromatography. The standard covers sample preparation by either a tubular furnace combustion or an oxygen combustion flask method, conversion of combustion products to sulfate, chromatographic determination of sulfate and conversion of sulfate results to total sulfur content. ISO 19242 replaces the older titration-based methods (e.g., thorin) with a safer, more accurate ion-chromatographic technique.
Key Topics and Requirements
- Scope and applicability: Method applies to raw rubber and rubber compounds. The tubular furnace combustion method is recommended for rubbers with sulfur
Технические детали
- Технический комитет
- ISO/TC 45/SC 2 - Testing and analysis
- SKU
- ISO 19242:2021
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