ISO 15181-5-2008 PDF

Full title and description

Paints and varnishes — Determination of release rate of biocides from antifouling paints — Part 5: Calculation of the tolylfluanid and dichlofluanid release rate by determination of the concentration of dimethyltolylsulfamide (DMST) and dimethylphenylsulfamide (DMSA) in the extract. This part of ISO 15181 defines the analytical determination and calculation procedure used to quantify the release of the organic biocides tolylfluanid and dichlofluanid from antifouling paint films into artificial seawater under the specified laboratory extraction conditions of the ISO 15181 series.

Abstract

ISO 15181-5:2008 specifies the laboratory analytical method and the formulae for converting measured concentrations of the degradation products DMST and DMSA in an artificial seawater extract into a release rate for the parent biocides tolylfluanid and dichlofluanid. The method is intended to be used together with ISO 15181-1 (general extraction procedure) and other parts of the ISO 15181 series to provide repeatable, comparable leaching-rate data for antifouling coatings.

General information

• Status: Published (first edition; listed as active in commercial/national catalogs; verify with your national standards body for current adoption or withdrawal notices).
• Publication date: May 2008 (first edition published in May 2008).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 87.040 — Paints and varnishes.
• Edition / version: First edition, 2008.
• Number of pages: ≈17 pages (catalog listings report 17 pages; some national adoptions list slightly different pagination).

Scope

This part describes the apparatus, reagents, analytical determination (measuring DMST and DMSA in artificial seawater extracts) and the calculation required to report the release rate of tolylfluanid and dichlofluanid from antifouling paint films produced under the extraction conditions given in ISO 15181-1. It is intended for use in laboratory intercomparisons, quality control and regulatory assessment where standardized release-rate data for these organic biocides are required.

Key topics and requirements

• Definition of target analytes: dimethyltolylsulfamide (DMST) and dimethylphenylsulfamide (DMSA) as measurable degradation products used to infer parent-biocide release.
• Specified sampling/extraction conditions to be used in conjunction with ISO 15181-1 (artificial seawater, temperature, exposure intervals).
• Analytical method requirements for quantifying DMST and DMSA in the extract (chromatographic/chemical determination and limits of detection/quantitation suitable for the stated release-rate range).
• Calculation procedure converting measured extract concentrations into a release rate (units expressed per area per time) and guidance on reporting.
• Guidance on expression of uncertainty, quality controls and use of reference materials or interlaboratory comparisons to ensure comparability.

Typical use and users

Test laboratories performing leaching studies on antifouling coatings, paint manufacturers validating product release properties, environmental regulators assessing potential marine biocide emissions, and research groups comparing controlled-release performance of antifouling formulations. The standard is primarily used where standardized, repeatable laboratory release-rate data are required for product development, conformity testing or environmental impact assessment.

Related standards

ISO 15181 is a multi-part series. Relevant parts include ISO 15181-1 (General method for extraction of biocides), ISO 15181-2 (Determination of copper-ion concentration and calculation), ISO 15181-3 (Calculation of zineb release rate via ethylenethiourea), ISO 15181-4 (determination of pyridine-triphenylborane PTPB concentration), and ISO 15181-6 (determination of tralopyril release via its degradation product). These parts are intended to be used together to cover a range of common organic and metallic biocides used in antifouling paints.

Keywords

antifouling paints, biocide release rate, tolylfluanid, dichlofluanid, DMST, DMSA, leaching test, artificial seawater, paints and varnishes, ISO 15181.

FAQ

Q: What is this standard?

A: ISO 15181-5:2008 is Part 5 of the ISO 15181 series and specifies the analytical determination and calculation method to quantify the release rate of the organic biocides tolylfluanid and dichlofluanid from antifouling paint films by measuring their characteristic degradation products (DMST and DMSA) in artificial seawater extracts.

Q: What does it cover?

A: It covers required apparatus, reagents, analytical measurement of DMST and DMSA, calculation procedures to convert measured concentrations into release rates (area/time), and reporting/quality-control guidance when used with the general extraction method of ISO 15181-1.

Q: Who typically uses it?

A: Accredited test laboratories, paint and coatings manufacturers, environmental assessors and regulatory authorities involved in testing or approving antifouling coatings. Researchers comparing leaching behavior may also use it.

Q: Is it current or superseded?

A: ISO 15181-5 was published in 2008 as the first edition. Commercial and national catalogs list it as published/active; however, the status of standards can be updated by ISO or national bodies, so confirm current adoption or any amendments through your national standards body or the ISO webstore. (Note: other parts of the series have later confirmations or updates — for example ISO 15181-1 was confirmed in 2023).

Q: Is it part of a series?

A: Yes — it is Part 5 of the ISO 15181 series (Paints and varnishes — Determination of release rate of biocides from antifouling paints). The series includes Parts 1 through at least 6, each addressing specific biocides or analytical procedures.

Q: What are the key keywords?

A: Antifouling, biocide release, tolylfluanid, dichlofluanid, DMST, DMSA, leaching test, artificial seawater, release rate, ISO 15181.