GOST R 70539-2022 PDF

Full title and description

GOST R 70539-2022 — "Ксилол каменноугольный. Технические условия" (English: "Coal xylene. Specifications"). The document defines technical specifications, quality grades, methods of sampling and testing, safety and handling, packaging, marking and transport requirements for coal-derived xylene (a mixture of xylene isomers and ethylbenzene) produced from coal-tar benzole fractions.

Abstract

This national standard sets requirements for coal xylene as a solvent and industrial feedstock: composition limits (sum of xylene isomers and ethylbenzene), physical‑chemical parameters (density at 20 °C, boiling range, sulfur‑acid color, water‑extract reaction), analytical/test methods (gas chromatography conditions for component content), quality grades and acceptance rules, safety measures (fire/explosion properties and permissible workplace concentrations), and rules for packaging, storage and transport. It also references established test methods and relevant GOSTs used for parameter determination.

General information

• Status: Initially approved (Dec 14, 2022) but subsequently affected by Rosstandart administrative action — see notes below (cancellation of related orders by Rosstandart Order No. 1601‑st dated 20 Dec 2023). Users should confirm current legal status before application.
• Publication date: Approved by Rosstandart 14 December 2022; planned date of introduction 01 March 2024 (see official entries).
• Publisher: Federal Agency on Technical Regulating and Metrology (Rosstandart).
• ICS / categories: OKS / ICS classification for this subject area: ОКС (ICS) 71.080.15 — Aromatic hydrocarbons / Organic chemical substances.
• Edition / version: National standard, 2022 edition (designation GOST R 70539‑2022).
• Number of pages: 12 pages (published electronic text).

Scope

The standard applies to coal xylene — the product defined as a mixture of three xylene isomers and ethylbenzene obtained in processing coal-tar benzole fractions — and specifies requirements for its production quality, acceptance (commercial lot definition), analytical determination of main components (including gas‑chromatographic conditions), safety classification and instructions for packaging, storage and transport for domestic use and export. It is intended for producers, testing laboratories, transporters and purchasers of coal xylene.

Key topics and requirements

• Definition and scope: product description (mixture of xylene isomers + ethylbenzene) and intended uses (solvent for paints, coatings, industrial processes).
• Quality grades and limits: tabulated physical‑chemical parameters for grades (density at 20 °C, boiling limits for 95% distillation, mass fraction of main substance, m‑xylene content, sulfuric acid color, water‑extract reaction).
• Analytical methods: sampling per GOST 5445 and test methods referenced (including gas‑chromatographic determination of component composition with specified chromatographic conditions).
• Safety and hazard data: flammability class, flash point (~24 °C), autoignition temperature, explosive vapor limits, recommended extinguishing media, and occupational exposure limit guidance.
• Acceptance and sampling: batch/lot definition (typically each tank/railcar is a lot), acceptance testing rules and permitted analytical variance between parallel determinations.
• Packaging, marking and transport: rules for rail tank cars and export packaging (steel drums), marking for transport hazard class and UN number, and storage tank requirements including venting and fire‑protection measures.

Typical use and users

Primary users are coal‑chemistry producers, solvent manufacturers, quality control and analytical laboratories, purchasers in paint/varnish and coatings industries, logistics providers handling flammable liquid transport, and national/regional regulators or procurement agencies specifying material acceptance. Laboratories use the standard's test procedures to verify composition and purity for commercial and regulatory compliance.

Related standards

The standard references and is associated with other GOSTs for testing and safety, for example: GOST 2706 series (methods for solvent testing such as appearance, distillation and sulfuric acid color), GOST 3900 / GOST 18995.1 for density, GOST 5445 for sampling, and GOST 19433 for transport marking. It replaces or updates prior coal xylene standards (earlier GOST 9949‑76 and later variants). Users should consult these referenced standards for detailed test methods and cross‑requirements.

Keywords

coal xylene; каменноугольный ксилол; xylene isomers; ethylbenzene; solvent specifications; gas chromatography; flammable liquid; GOST R 70539‑2022.

FAQ

Q: What is this standard?

A: GOST R 70539‑2022 is a Russian national standard titled "Ксилол каменноугольный. Технические условия" (Coal xylene. Specifications) that sets product definitions, quality requirements, test methods and handling/transport rules for coal‑derived xylene.

Q: What does it cover?

A: It covers composition and minimum purity criteria (sum of xylene isomers + ethylbenzene), physical‑chemical requirements (density, distillation limits, color, etc.), analytical/test procedures (including gas chromatography parameters), safety and occupational guidance, packaging, marking, transport and acceptance rules.

Q: Who typically uses it?

A: Producers and refiners of coal‑derived solvents, QC and analytical labs, chemical purchasers (paints, coatings, industrial users), transport and storage operators, and regulatory/procurement bodies referencing material specifications.

Q: Is it current or superseded?

A: The document was approved by Rosstandart on 14 December 2022 with a planned introduction date of 1 March 2024; however, Rosstandart issued an administrative order (No. 1601‑st dated 20 December 2023) cancelling a number of orders issued on 14 December 2022. As a result, the legal/status situation for several standards issued on 14 December 2022 (including GOST R approvals linked to that set of orders) was changed — therefore users must verify the current official status on Rosstandart or the consolidated legal database before relying on the standard in procurement, certification or regulatory work.

Q: Is it part of a series?

A: It belongs to the chemical/coal‑chemistry standards developed under Technical Committee TK 395 ("Coke and coke‑chemical products") and is related to other GOSTs governing solvents, test methods and transport/packing rules (numerous GOST 2706 series and sampling/transport standards). It also functions in the same topical cluster as earlier coal‑xylene standards (e.g., historical GOST 9949 variants) which have been revised or replaced over time.

Q: What are the key keywords?

A: Coal xylene; coal‑tar xylene; xylene isomers; ethylbenzene; solvent specifications; gas chromatography; flammable liquid; acceptance testing; packaging and transport.