ASTM D7190-10(2023)

Standard Practice to Evaluate Leaching of Water-Soluble Materials from Latex Paint Films<!--Missing unit for values in fn 3 - KF (10/23/23)--><?Pub Caret -1?>

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.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Sep-2023
• ICS: 87.040 - Paints and varnishes
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.42 - Architectural Coatings

Relations

• Replaces: ASTM D7190-10(2015) - Standard Practice to Evaluate Leaching of Water-Soluble Materials from Latex Paint Films
• Effective Date: 01-Oct-2023
• Referred By: ASTM D5324-16(2022) - Standard Guide for Testing Water-Borne Architectural Coatings
• Effective Date: 01-Oct-2023

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D7190 − 10 (Reapproved 2023)
Standard Practice to
Evaluate Leaching of Water-Soluble Materials from Latex
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 4. Significance and Use
1.1 This practice covers the ability of a latex paint film to 4.1 Surfactant staining is a common problem with exterior
resist staining caused by the leaching of water-soluble materi- house paints, particularly when subjected to humid environ-
als when contacted with water shortly after application. ments (such as morning dew) shortly after application.
1.2 Water staining is attributed to the leaching of surfactants 4.2 Interior paints used in humid areas such as kitchens and
or other water-soluble materials from a paint film. bathrooms may also experience surfactant staining.
1.3 The values stated in SI units are to be regarded as 4.3 Leaching of water-soluble materials may be dependent
standard. on colorant dispersions that are mixed into tint base paints.
Other paint components may also affect the leaching of
1.4 This standard does not purport to address all of the
water-soluble materials.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. 5.1 Film Applicator, suitable to obtain a wet film thickness
1.5 This international standard was developed in accor- typically in the range of 125 μm to 250 μm (5 mils to 10 mils),
dance with internationally recognized principles on standard- or as agreed upon between manufacturer and supplier.
ization established in the Decision on Principles for the
6. Materials
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
6.1 Black plastic panels.
Barriers to Trade (TBT) Committee.
6.2 Distilled water.
2. Referenced Documents
6.3 Syringe, 1.0 cc.
2.1 ASTM Standards:
7. Procedure
D1308 Test Method for Effect of Household Chemicals on
Clear and Pigmented Coating Systems
7.1 Apply the test paint along the long dimension of the
D3924 Specification for Standard Environment for Condi-
black plastic panel using the selected film applicator. Allow to
tioning and Testing Paint, Varnish, Lacquer, and Related
dry for 4 hours at standard atmospheric conditions of 23 °C 6
Materials
2 °C (73.5 ºF 6 3.5 ºF) and relative humidity of 50 % 6 5 %
as specified in Specification D3924. Use the same film thick-
3. Summary of Practice
ness when comparing a series of latex paint films.
3.1 Water droplets are placed on a paint film that is in its
7.2 Divide the test panel into three sections, labeling them 4
early stages of drying. Stains left behind are evaluated for
Hours, 1 Day, and 4 Days or times agreed upon by the
intensity and how the appearance of the coating has changed.
manufacturer and supplier. (Fig. 1)
7.3 Place a row of four droplets of distilled water at room
This practice
...