ISO 22518:2019 PDF

Name: ISO 22518:2019 — Paints and varnishes — Determination of solvents in water-thinnable coating materials — Gas-chromatographic method
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Paints and varnishes — Determination of solvents in water-thinnable coating materials — Gas-chromatographic method

Название (английский):

ISO 22518:2019

Paints and varnishes — Determination of solvents in water-thinnable coating materials — Gas-chromatographic method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 12 июля 2019 г.
Издание:: ISO IS 22518 edition 1 version 1
ICS:: 87.040

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Описание (английский):

This document specifies a method for the gas-chromatographic determination of the solvents in water-thinnable paints and varnishes, binder solutions, emulsions and dispersions. With the precision stated in Clause 13, single components above 0,02 % (mass fraction) can be determined quantitatively. The method defined in this document is not applicable for the determination of Volatile Organic Compounds (VOC) and Semi-Volatile Organic Compounds (SVOC) content. NOTE For the determination of VOC and SVOC, see ISO 11890‑2[2].

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 22518:2019 specifies a validated gas‑chromatographic method for the quantitative determination of solvents in water‑thinnable paints and varnishes, binder solutions, emulsions and dispersions. The method resolves single solvent components down to 0.02% (mass fraction) with the precision given in the standard. Note: ISO 22518:2019 is not intended for total VOC or SVOC content determination (see ISO 11890‑2 for VOC/SVOC methods).

Key topics and technical requirements

Principle: Separation of solvent components by gas chromatography (GC) followed by quantification using an internal standard and peak‑area integration.

Instrumentation:

Capillary GC suitable for fused silica/glass columns; example column: 50 m × 0.2 mm i.d., film ~0.2 µm (stationary phase chosen for separation).
Injection systems: hot injection, cold injection (temperature programmable to 300 °C), or automatic injector to improve precision. Choose cold injection when thermal decomposition or interfering products occur.
Detector: Flame Ionization Detector (FID) operable up to 300 °C; detector temperature must be at least 10 K above maximum oven temperature. Mass spectrometer or FT‑IR may be coupled for identification if required.
Syringes: 0.5–10 µL capacity with 0.1 µL graduations.

Chromatographic performance:

Peak resolution R ≥ 1.5 for components to be separated and quantified.
Integration and data‑acquisition parameters must be consistent between calibration and sample analysis.

Reagents and gases:

Carrier gas: dry O2‑free He, N2 or H2 (≥ 99.996%).
Detector gases: H2 (≥ 99.999%) and synthetic air free of organics.
Internal standards: e.g., isobutanol or diethylene glycol dimethyl ether; must be inert and thermally stable.
Diluents: methanol or tetrahydrofuran of ≥ 99% purity (or known purity).

Sampling, calibration and reporting: Follow ISO 15528 for sampling; calibration uses high‑purity solvent standards; results expressed as percentage mass fraction. Precision details and test report requirements are specified in the standard.

Applications and users

ISO 22518:2019 is used by:

Quality control and analytical chemistry laboratories in paint, varnish and coatings manufacturing.

R&D and formulation teams for solvent profiling in water‑thinnable coatings.

Third‑party and contract testing labs performing solvent identification and quantification in binder solutions, emulsions and dispersions.

Regulatory or compliance testing where component‑level solvent analysis (not VOC totals) is required.

Practical benefits include reliable solvent quantification, guidance on instrument configuration (hot vs cold injection), and standardized reporting for product control and comparative studies.

Related standards

ISO 11890‑2 - Determination of VOC and SVOC content (see for total VOC/SVOC methods)

ISO 15528 - Sampling for paints and varnishes

ISO 4618 - Terms and definitions for paints and varnishes

Keywords: ISO 22518:2019, gas chromatographic method, solvent determination, water‑thinnable paints, FID detector, capillary column, internal standard, paint testing, solvent analysis.

ISO 22518:2019 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

SIST EN ISO 11890-2:2020/A1:2024

Paints and varnishes - Determination of volatile organic compounds(VOC) and/or semi volatile organic compound…

BS EN ISO 15528:2020

Paints, varnishes and raw materials for paints and varnishes. Sampling.

SIST EN ISO 4618:2023

Paints and varnishes - Vocabulary (ISO 4618:2023)