ISO 10638-2017 PDF

Full title and description

ISO 10638:2017 — Rubber — Identification of antidegradants by gas chromatography/mass spectrometry. This International Standard specifies a qualitative method using gas chromatography coupled with mass spectrometry (GC/MS) for the identification of antidegradant substances in raw rubber, latex, unvulcanized rubber compounds and vulcanized rubber products; it covers the 31 types of antidegradant listed in Annex A of the standard.

Abstract

ISO 10638:2017 describes sample preparation (thermal desorption or solvent extraction), chromatographic separation and mass-spectrometric identification procedures for characteristic antidegradant compounds. The method is intended for qualitative identification (not for quantitative analysis) and uses mass spectra (with retention-index data as supplementary information) to identify recovered antidegradants.

General information

• Status: Published (confirmed during 2022 periodic review).
• Publication date: July 2017.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 83.040.10; 83.040.20 (rubber and rubber compounding ingredients).
• Edition / version: Edition 2 (2017).
• Number of pages: 45 (main text length as published by ISO).

(General information summary based on ISO bibliographic records and registry entries.)

Scope

Specifies qualitative GC/MS-based procedures for identification of antidegradants present in raw rubbers, latex, unvulcanized rubber compounds and vulcanized rubber products. Applicable to the 31 antidegradant types listed in Annex A; the procedure is not intended for quantitative determinations. Sample recovery may be performed by thermal desorption (analysis of desorbed vapours) or by solvent extraction of the test material prior to GC/MS analysis.

Key topics and requirements

• Analytical technique: gas chromatography coupled with mass spectrometry (GC/MS) for compound identification (qualitative only).
• Sample recovery methods: thermal-desorption (direct desorption of volatiles from heated sample) and solvent-extraction procedures.
• Instrumental parameters and guidance: recommended carrier gas, column types and temperature/injection ranges are provided to obtain reproducible chromatographic separation and mass spectra for identification.
• Target compounds: identification guidance for 31 classes/types of antidegradants listed in Annex A (examples include common antioxidants and antiozonants used in rubber compounding).
• Reporting and interpretation: identification is based on mass spectral matching (with retention-index data as supplementary evidence); method is explicitly not for quantification.

Typical use and users

Used by analytical and quality-control laboratories, rubber and tyre manufacturers, compounders, material‑testing organisations and research groups for identification of antidegradants in raw materials and finished rubber products. Useful for formulation verification, failure investigation, product surveillance and regulatory or conformity checks where identification (presence/absence and identity) of stabilizers/antidegradants is required.

Related standards

ISO 10638:2017 supersedes ISO 10638:2010 (withdrawn). Other related ISO methods for identification of antidegradants and stabilizers include thin-layer chromatographic methods (ISO 4645 series) and specific test-method standards for classes of antidegradants (for example standards addressing p‑phenylenediamine derivatives). These related standards are produced under ISO/TC 45/SC 2 and can be used alongside ISO 10638 when different separation or screening approaches are required.

Keywords

rubber; antidegradants; antioxidants; antiozonants; GC/MS; gas chromatography; mass spectrometry; qualitative identification; thermal desorption; solvent extraction; ISO/TC 45.

FAQ

Q: What is this standard?

A: ISO 10638:2017 is an international standard that specifies a qualitative GC/MS method for identifying antidegradant compounds in rubber materials and products.

Q: What does it cover?

A: It covers sample recovery (thermal desorption or solvent extraction), chromatographic separation and mass-spectrometric identification procedures applicable to 31 antidegradant types listed in Annex A; it is not a quantitative method.

Q: Who typically uses it?

A: Analytical/quality laboratories, rubber compounders and manufacturers, testing organisations and R&D groups use it for formulation checks, product surveillance and investigations where identifying the presence and identity of antidegradants is needed.

Q: Is it current or superseded?

A: ISO 10638:2017 (Edition 2) is the current published edition; the previous edition ISO 10638:2010 has been withdrawn. The 2017 edition was reviewed and confirmed in 2022.

Q: Is it part of a series?

A: It sits within the body of ISO/TC 45 rubber test‑method standards. Related methods addressing antidegradant identification by other techniques (e.g., thin‑layer chromatography) exist as separate ISO standards (for example ISO 4645).

Q: What are the key keywords?

A: Key keywords are: antidegradant identification, GC/MS, thermal desorption, solvent extraction, rubber, latex, vulcanized rubber, antioxidants, antiozonants.