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ASTM D5108-90(2002)

(Test Method)

Standard Test Method for Organotin Release Rates of Antifouling Coating Systems in Sea Water

Standard Test Method for Organotin Release Rates of Antifouling Coating Systems in Sea Water

SCOPE
1.1 This test method covers the laboratory determination of the rate at which organotin expressed as tributyltin (TBT) is released from an antifouling (AF) coating in synthetic sea water using graphite furnace atomic absorption spectrophotometry (GF-AAS). This does not exclude the use of other analytical methodology for measurement of organotin in sea water such as gas chromatography.
1.2 The values stated in SI units are to be regarded as standard. The inch-pound units given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 7.

General Information

Status
Historical
Publication Date
04-Dec-1990
ICS
87.040 - Paints and varnishes
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.45 - Marine Coatings
Current Stage
Ref Project

Relations

Replaces
ASTM D5108-90(1996) - Standard Test Method for Organotin Release Rates of Antifouling Coating Systems in Sea Water
Effective Date
05-Dec-1990
Replaced By
ASTM D5108-90(2007) - Standard Test Method for Organotin Release Rates of Antifouling Coating Systems in Sea Water (Withdrawn 2016)
Effective Date
01-Jun-2007
Referred By
ASTM D5479-94(2020) - Standard Practice for Testing Biofouling Resistance of Marine Coatings Partially Immersed
Effective Date
05-Dec-1990

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ASTM D5108-90(2002) - Standard Test Method for Organotin Release Rates of Antifouling Coating Systems in Sea WaterASTM D5108-90(2002) - Standard Test Method for Organotin Release Rates of Antifouling Coating Systems in Sea Water
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ASTM D5108-90(2002) - Standard Test Method for Organotin Release Rates of Antifouling Coating Systems in Sea Water
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D5108–90(Reapproved2002)
Standard Test Method for
Organotin Release Rates of Antifouling Coating Systems in
1
Sea Water
This standard is issued under the fixed designation D 5108; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2 Analysis of sea water for tributyltin is conducted by
extracting the organotin with toluene, washing with sodium
1.1 This test method covers the laboratory determination of
hydroxide, and measuring for total tin using (GF-AAS).
the rate at which organotin expressed as tributyltin (TBT) is
released from an antifouling (AF) coating in synthetic sea
4. Significance and Use
waterusinggraphitefurnaceatomicabsorptionspectrophotom-
4.1 This test method is designed to provide a laboratory
etry (GF-AAS). This does not exclude the use of other
procedure to measure changes in the release rates of solvent
analytical methodology for measurement of organotin in sea
soluble tin (tributyl- and triphenyltin) that occur during a
water such as gas chromatography.
period of immersion under specified conditions of constant
1.2 The values stated in SI units are to be regarded as
temperature, pH, salinity, and low heavy-metal concentrations
standard. The inch-pound units given in parentheses are for
in the surrounding sea water. Quantitative measurement of the
information only.
release rate is necessary to help in selection of materials, in
1.3 This standard does not purport to address all of the
providing quality assurance, and in understanding the perfor-
safety concerns, if any, associated with its use. It is the
mance mechanism.
responsibility of the user of this standard to establish appro-
4.2 This test method serves only as a guide for organotin
priate safety and health practices and determine the applica-
release rates in service. Organotin release rates of antifouling
bility of regulatory limitations prior to use. For specific hazard
(AF) paint systems in service can vary over the life of the
statements, see Section 7.
coating system depending on the formulation and the environ-
2. Referenced Documents ment. Differences in berthing locations, operating schedules,
length of service, condition of paint-film surface, temperature,
2.1 ASTM Standards:
pH, and salinity can affect results, Results obtained may not
D 1141 Practice for the Preparation of Substitute Ocean
2
necessarily reflect actual tributyltin release rates that will occur
Water
in service, but provide reliable comparisons of the release rate
D 1212 Test Methods for Measurement of Wet Film Thick-
3 characteristics of different antifouling formulations.
ness of Organic Coatings
4.3 This test method will serve to characterize the early
D 4138 Test Methods for Measurement of Dry Film Thick-
4 release rate pattern, as well as estimate the steady state release,
ness of Protective Coating Systems by Destructive Means
of tributyltin from both self-polishing copolymer and free-
3. Summary of Test Method association antifouling paints.
3.1 The candidate paint system is applied to cylindrical test
5. Apparatus
specimens. The coated specimens are placed in a tank of
1
5.1 Release-Rate Measuring Container—A2-L(nominal ⁄2
synthetic sea water where the tin levels are kept low by
5
gal) polycarbonate container, approximately 13.5 cm (5.5 in.)
circulating the sea water through a carbon filter. At specified
in diameter and 19 cm (7.5 in.) high, fitted with three
intervals, each specimen is placed in 1500 mL of unused sea
1
polycarbonate rods approximately 6 mm (nominal ⁄4 in.) in
water and is rotated for 1 h. The rate of tributyltin release from
diameter to serve as baffles. Rods shall be evenly spaced on the
the paint is determined by measuring tributyltin concentrations
inside circumference of the container to prevent swirling of
in the sea water.
water with the test cylinder during rotation. The rods will be
secured to the container walls using acetone or methylene
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint chloride.
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.45 on Marine Coatings.
Current edition approved Dec. 5, 1990. Published February 1991.
2 5
Annual Book of ASTM Standards, Vol 11.02. ANalgene Container, available from Cole-Palmer, 7425 N. OakAve., Chicago,
3
Annual Book of ASTM Standards, Vol 06.01. IL60648, catalog number R-6761-20, or equivalent, has been found satisfactory for
4
Annual Book of ASTM Standards, Vol 06.02. this purpose.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428
...

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