ASTM D7190-10
(Practice)Standard Practice to Evaluate Leaching of Water-Soluble Materials from Latex Paint Films
Standard Practice to Evaluate Leaching of Water-Soluble Materials from Latex Paint Films
SIGNIFICANCE AND USE
Surfactant staining is a common problem with exterior house paints, particularly when subjected to humid environments (such as morning dew) shortly after application.
Interior paints used in humid areas such as kitchens and bathrooms may also experience surfactant staining.
Leaching of water-soluble materials may be dependent on colorant dispersions that are mixed into tint base paints. Other paint components may also affect the leaching of water-soluble materials.
SCOPE
1.1 This practice covers the ability of a latex paint film to resist staining caused by the leaching of water-soluble materials when contacted with water shortly after application.
1.2 Water staining is attributed to the leaching of surfactants or other water-soluble materials from a paint film.
1.3 The values stated in SI units are to be regarded as standard.
1.4 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 to determine the applicability of regulatory limitations prior to use.
General Information
Relations
Buy Standard
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D7190–10
Standard Practice to
Evaluate Leaching of Water-Soluble Materials from Latex
1
Paint Films
This standard is issued under the fixed designation D7190; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope Other paint components may also affect the leaching of
water-soluble materials.
1.1 This practice covers the ability of a latex paint film to
resist staining caused by the leaching of water-soluble materi-
5. Apparatus
als when contacted with water shortly after application.
5.1 Film Applicator, suitable to obtain a wet film thickness
1.2 Water staining is attributed to the leaching of surfactants
typically in the range of 125-250 µm (5-10 mils), or as agreed
or other water-soluble materials from a paint film.
upon between manufacturer and supplier.
1.3 The values stated in SI units are to be regarded as
standard.
6. Materials
1.4 This standard does not purport to address all of the
3
6.1 Black plastic panels.
safety concerns, if any, associated with its use. It is the
6.2 Distilled water.
responsibility of the user of this standard to establish appro-
6.3 Syringe, 1.0 cc.
priate safety and health practices and to determine the
applicability of regulatory limitations prior to use.
7. Procedure
7.1 Apply the test paint along the long dimension of the
2. Referenced Documents
2 black plastic panel using the selected film applicator. Allow to
2.1 ASTM Standards:
dry for 4 hours at standard atmospheric conditions of 23 6 2°C
D1308 Test Method for Effect of Household Chemicals on
(73.5 6 3.5ºF) and relative humidity of 50 6 5 % as specified
Clear and Pigmented Organic Finishes
in Specification D3924. Use the same film thickness when
D3924 Specification for Environment for Conditioning and
comparing a series of latex paint films.
Testing Paint, Varnish, Lacquer, and Related Materials
7.2 Divide the test panel into three sections, labeling them 4
3. Summary of Practice Hours, 1 Day, and 4 Days or times agreed upon by the
manufacturer and supplier. (Fig. 1)
3.1 Water droplets are placed on a paint film that is in its
7.3 Place a row of four droplets of distilled water at room
early stages of drying. Stains left behind are evaluated for
temperature across the top of the first designated section of the
intensity and how the appearance of the coating has changed.
test paint. Each droplet shall be approximately 0.1 cc in
4. Significance and Use volume.
7.4 Allow the water droplets to stand for 10 minutes. Then
4.1 Surfactant staining is a common problem with exterior
lift the panel into a vertical position so the water droplets run
house paints, particularly when subjected to humid environ-
down the section of the paint film being evaluated.
ments (such as morning dew) shortly after application.
7.5 Repeat steps 7.3 and 7.4 after 1 and 4 Days, or other
4.2 Interior paints used in humid areas such as kitchens and
designated intervals, in their respective
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D7190–05 Designation:D7190–10
Standard Practice to
Evaluate Leaching of Water-Soluble Materials from Latex
1
Paint Films
This standard is issued under the fixed designation D7190; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice covers the ability of a latex paint film to resist staining caused by the leaching of water-soluble materials when
contacted with water shortly after application.
1.2 Water staining is attributed to the leaching of surfactants or other water-soluble materials from a paint film.
1.3 The values stated in SI units are to be regarded as standard.
1.4 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 to determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D1308 Test Method for Effect of Household Chemicals on Clear and Pigmented Organic Finishes
D3924 Specification for Environment for Conditioning and Testing Paint, Varnish, Lacquer, and Related Materials
3. Summary of Practice
3.1 Water droplets are placed on a paint film that is in its early stages of drying. Stains left behind are evaluated for intensity
and how the appearance of the coating has changed.
4. Significance and Use
4.1 Surfactant staining is a common problem with exterior house paints, particularly when subjected to humid environments
(such as morning dew) shortly after application.
4.2 Interior paints used in humid areas such as kitchens and bathrooms may also experience surfactant staining.
4.3 Leaching of water-soluble materials may be dependent on colorant dispersions that are mixed into tint base paints. Other
paint components may also affect the leaching of water-soluble materials.
5. Apparatus
5.1 Film Applicator, suitable to obtain a wet film thickness typically in the range of 125-250 µm (5-10 mils), or as agreed upon
between manufacturer and supplier.
6. Materials
3
6.1 Black plastic panels.
6.2 Distilled water.
6.3 Syringe, 1.0 cc.
7. Procedure
7.1 Apply the test paint along the long dimension of the black plastic panel using the selected film applicator.Allow to dry for
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.42 on Architectural Coatings.
Current edition approved July 1, 2005. Published July 2005. DOI: 10.1520/D7190-05.
Current edition approved Dec. 1, 2010. Published December 2010. Originally approved in 2005. Last previous edition approved in 2005 as D7190 - 05. DOI:
10.1520/D7190-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.