ISO 1017-2025 PDF

Full title and description

ISO 1017:2025 — Brown coals and lignites — Determination of acetone-soluble material ("resinous substance") in the benzene-soluble extract. This International Standard specifies a laboratory method to determine the mass fraction of acetone-soluble material (commonly referred to as the "resinous substance") present in the benzene-soluble extract obtained from brown coal and lignite samples. The document notes that the acetone extract can also contain wax dissolved concurrently with the resinous fraction.

Abstract

This standard defines a solvent extraction and measurement procedure to quantify the acetone‑soluble portion of the benzene‑soluble extract from brown coals and lignites. It provides guidance on sample preparation, extraction, separation of the acetone‑soluble fraction and calculation of the mass fraction to be reported. The method is intended for routine laboratory determination used in quality assessment and research of low‑rank coals.

General information

• Status: Published.
• Publication date: May 2025 (Edition 4).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 73.040 — Coal, lignite, peat and other solid fuels; ISO/TC 27/SC 5.
• Edition / version: 4 (2025).
• Number of pages: 4 pages.

Scope

ISO 1017:2025 applies to brown coals and lignites and specifies the analytical procedure for determining the mass fraction of the acetone‑soluble material present within the benzene‑soluble extract. The scope covers the extraction, separation and determination steps necessary to report the acetone‑soluble fraction; it includes the note that waxes may co‑extract with the resinous substance and should be considered when interpreting results. The method is intended for routine laboratory use and quality control of low‑rank coals.

Key topics and requirements

• Definitions and terminology related to benzene‑soluble and acetone‑soluble extracts from brown coal and lignite.
• Sample preparation requirements to ensure representative extraction (drying, grinding, sub‑sampling where applicable).
• Solvent extraction procedure using benzene followed by acetone treatment to separate the acetone‑soluble (“resinous”) fraction.
• Separation, drying and weighing of the acetone‑soluble fraction and calculation of mass fraction (reporting units and significant figures).
• Notes on interferences: presence of waxes and other co‑extractables that may affect the measured acetone‑soluble mass.
• Reporting requirements and typical precision/uncertainty considerations for laboratory results.

Typical use and users

Laboratories performing coal and lignite characterization, fuel testing laboratories, coal quality control teams in mining and power generation, research institutions studying low‑rank coal composition, and standards bodies referencing coal analysis methods. Users employ this standard to obtain comparable measurements of resinous substances for quality assessment, product specification and research.

Related standards

ISO 1017:2025 supersedes the earlier ISO 1017:2006 edition. It is part of the suite of ISO/TC 27 standards that cover sampling and analytical methods for coals, lignites and peat; laboratories often use it alongside other coal analysis standards in the ISO 73.040 series.

Keywords

brown coal; lignite; acetone‑soluble material; resinous substance; benzene‑soluble extract; coal analysis; solvent extraction; ISO 1017; ISO/TC 27.

FAQ

Q: What is this standard?

A: ISO 1017:2025 is an International Standard that specifies a laboratory method to determine the mass fraction of acetone‑soluble material (the "resinous substance") in the benzene‑soluble extract of brown coals and lignites.

Q: What does it cover?

A: It covers sample preparation, solvent extraction (benzene extract followed by acetone treatment), separation and measurement of the acetone‑soluble fraction, calculation of the mass fraction and guidance on interpretation (including possible co‑extraction of waxes).

Q: Who typically uses it?

A: Analytical and quality control laboratories working with brown coal and lignite, coal producers, power utilities, and researchers in fuel science and geochemistry.

Q: Is it current or superseded?

A: ISO 1017:2025 is the current published edition (Edition 4, published May 2025) and replaces the previous ISO 1017:2006.

Q: Is it part of a series?

A: Yes — it is part of the ISO/TC 27 suite of standards for coal, lignite and peat analysis (ICS 73.040) and is used alongside other ISO methods for coal characterization.

Q: What are the key keywords?

A: Brown coal, lignite, acetone‑soluble, resinous substance, benzene‑soluble extract, coal analysis, solvent extraction, ISO 1017.