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ISO/CD TS 4667

Coal — Determination of the thermal stability and thermal fragmentation

General information

Current stage: 30.99 Effective date: Feb 2, 2026

Originator: ISO

Owner: ISO/TC 27/SC 5

Type: Technical Specification

Scope

This document specifies methods for the determination of thermal stability and thermal fragmentation of coal. It is applicable to brown coal and lignites, anthracites and bituminous coal with a caking index of zero (determined by ISO 15585).

Life cycle

PREVIOUSLY

PUBLISHED
ISO/TS 4667:2022

NOW

IN_DEVELOPMENT
ISO/CD TS 4667
30.99 CD approved for registration as DIS
Feb 2, 2026