ISO 15181-6-2012 PDF

Full title and description

Paints and varnishes — Determination of release rate of biocides from antifouling paints — Part 6: Determination of tralopyril release rate by quantitation of its degradation product in the extract. This International Standard specifies a laboratory method to determine how much tralopyril is released from antifouling coatings into artificial seawater by converting released tralopyril to its stable degradation product and quantifying that product to calculate a release rate.

Abstract

ISO 15181-6:2012 describes an analytical procedure to accelerate the hydrolytic conversion of tralopyril (which is unstable in water) to its degradation product 3-bromo-5-(4-chlorophenyl)-4-cyano-1H-pyrrole-2-carboxylic acid (BCCPCA), quantify BCCPCA in artificial seawater extracts and calculate the tralopyril release rate for antifouling paints when used in conjunction with the extraction procedure of ISO 15181-1. The method includes sample treatment, chromatographic calibration, conversion and recovery checks, calculation of per-cylinder and mean release rates, validation and reporting requirements.

General information

• Status: Published (confirmed current following ISO review).
• Publication date: July 2012 (Edition 1, 2012-07).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 87.040 (Paints and varnishes).
• Edition / version: Edition 1 (2012).
• Number of pages: 14.

Scope

This part of ISO 15181 specifies a laboratory procedure to determine the amount of tralopyril released from antifouling paints into artificial seawater by converting released tralopyril into its stable degradation product (BCCPCA) through heat treatment, quantifying BCCPCA in the extract and calculating the tralopyril release rate under the specified conditions. It is intended to be used together with ISO 15181-1 (the extraction and test cylinder procedure) and is applicable to the practical quantitation range given in the standard.

Key topics and requirements

• Conversion of tralopyril to BCCPCA by controlled heat treatment of artificial seawater extracts.
• Analytical quantitation of BCCPCA (typically by chromatographic techniques) including preparation of stock and calibration solutions, instrument calibration and recovery checks.
• Calculation methods for per-cylinder release rate, mean release rate for sets of cylinders, cumulative release and pseudo-steady-state release.
• Validation and limits of the method: practical quantitation limits given as about 0.36 µg·cm⁻²·d⁻¹ to 270 µg·cm⁻²·d⁻¹ for the combined procedure; lower release rates require analytical methods with an LOQ for tralopyril in artificial seawater of less than 2 µg·L⁻¹.
• Requirements for test reporting, annexed supplementary and informative information on tralopyril and BCCPCA, and guidance for conversion/recovery checks.

Typical use and users

Used by marine coatings manufacturers, contract testing laboratories, environmental and regulatory testing agencies, and research organisations that evaluate biocide release from antifouling paints. Typical applications include product development and quality control of antifouling coatings, regulatory compliance testing and environmental exposure assessments.

Related standards

Mainly intended to be used in conjunction with ISO 15181-1 (test cylinder extraction procedure). It is part of the ISO 15181 series addressing methods for determination of biocide release rates from antifouling paints and is connected to other national/adopted variants (for example EN/ISO adoptions) covering similar procedures.

Keywords

tralopyril; BCCPCA; antifouling paints; biocide release rate; artificial seawater extract; ISO 15181; chromatographic quantitation; release-rate validation.

FAQ

Q: What is this standard?

A: ISO 15181-6:2012 is an international standard specifying a laboratory method to determine the release rate of the biocide tralopyril from antifouling paints by quantifying its stable degradation product in artificial seawater extracts.

Q: What does it cover?

A: It covers sample treatment (including heat-accelerated conversion of tralopyril to BCCPCA), calibration and instrument procedures, conversion and recovery checks, calculation of release rates (per cylinder, mean and cumulative values), validation and reporting. It is designed to be used with ISO 15181-1 extraction procedures.

Q: Who typically uses it?

A: Marine coatings manufacturers, analytical and environmental testing laboratories, research institutions and regulatory bodies working on antifouling product evaluation and environmental monitoring.

Q: Is it current or superseded?

A: The 2012 edition (Edition 1) remains the published version; ISO indicates the publication was reviewed and confirmed in 2023, so this version is current (not superseded) as of that review.

Q: Is it part of a series?

A: Yes — it is Part 6 of the ISO 15181 series (which addresses determination of release rates of biocides from antifouling paints). It is intended to be used alongside ISO 15181-1 and other related parts that define extraction and test procedures.

Q: What are the key keywords?

A: tralopyril; BCCPCA; antifouling; biocide release; artificial seawater; chromatographic analysis; ISO 15181.