ISO 10638:2017 PDF

Name: ISO 10638:2017 — Rubber — Identification of antidegradants by gas chromatography/mass spectrometry
SKU: ISO 10638:2017
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Rubber — Identification of antidegradants by gas chromatography/mass spectrometry

Название (английский):

ISO 10638:2017

Rubber — Identification of antidegradants by gas chromatography/mass spectrometry

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 45
Дата публикации:: 25 июля 2017 г.
Издание:: ISO IS 10638 edition 2 version 1
ICS:: 83.040.10

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Описание (английский):

This document specifies a method using gas chromatography/mass spectrometry, for the identification of antidegradants in raw rubbers, latices, unvulcanized-rubber compounds and vulcanized-rubber products. It is applicable to the 31 types of antidegradant listed in Annex A. The method specified is qualitative and is not intended for quantitative analysis.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 10638:2017 - Rubber - Identification of antidegradants by gas chromatography/mass spectrometry (GC‑MS) - specifies a qualitative analytical method for identifying antidegradants in raw rubbers, latices, unvulcanized-rubber compounds and vulcanized-rubber products. It covers identification of the 31 antidegradant types listed in Annex A and provides supporting chromatograms/mass spectra (Annex B) and a procedure for determining gas‑chromatographic retention index (Annex C). The method is intended for identification only and is not for quantitative analysis.

Key technical topics and requirements

Analytical principle: Antidegradants are recovered by either thermal desorption or solvent extraction and separated/identified using gas chromatography/mass spectrometry (GC‑MS). Retention indices can supplement mass‑spectral identification.

Thermal‑desorption method: Uses a desorption device (or low‑temperature pyrolyzer) connectable to the GC; desorption temperatures up to 350 °C are specified. Typical GC conditions include carrier gas (helium) flow 1.0–2.0 ml/min and injector temperature 300–350 °C.

Solvent‑extraction method: Uses acetone in a Soxhlet extractor (approx. 8 h extraction for ~2 g sample), concentration to 10–20 ml and injection of 1 µl for GC‑MS analysis. If sample dissolves in acetone, thermal desorption is preferred.

GC column and MS parameters: Recommended column dimensions (25–60 m length, 0.25–0.35 mm i.d., 5 % diphenyl/95 % polydimethylsiloxane phase) and MS settings (electron ionization at 70 eV; scan m/z 50–600; interface ~300 °C) are specified to ensure reproducible identification.

Data analysis: Compare mass spectra to Annex B figures and Table A.1, and verify retention indices (Annex C) when available. The method recognizes that multiple antidegradants or decomposition products can be present.

Practical applications

Quality control and incoming material inspection for rubber manufacturers and compounders.

Failure analysis and forensic investigation of rubber products to determine antidegradant presence.

Environmental and regulatory screening where identification of specific antidegradants is required.

R&D and formulation development to confirm antioxidant/antidegradant types in raw and finished rubber articles.

Related standards

ISO 123 (Rubber latex - Sampling)

ISO 124 (Latex - Determination of total solids)

ISO 1407 (Rubber - Determination of solvent extract)

ISO 1795 (Rubber - Sampling and preparative procedures)

ISO 4645 (Thin‑layer chromatography methods for antidegradants - alternative qualitative approach)

Keywords: ISO 10638:2017, GC‑MS, antidegradants, rubber testing, thermal desorption, solvent extraction, retention index, Soxhlet extraction.

ISO 10638:2017 PDF

Abstract

Похожие стандарты

Overview

Key technical topics and requirements

Practical applications

Who should use ISO 10638:2017

Related standards

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