ASTM D5724-05

Standard Specification for Gouache Paints

SCOPE
1.1 This specification establishes requirements for composition, physical properties, performance, and labeling of gouache paints.
1.2 This specification covers pigments, vehicles, and additives. Requirements are included for pigment identification, lightfastness, and consistency.
1.3 lists some pigments meeting the lightfastness requirements in this specification. In order to identify other pigments that meet these requirements, instructions are given for test specimen preparation. Test methods for determining relative lightfastness are referenced.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 This test method is used to test opacity of paints. Several drawdown bars having different aperture sizes are used.

General Information

• Status: Historical
• Publication Date: 30-Jun-2005
• ICS: 87.040 - Paints and varnishes
• ICS: 97.195 - Items of art and handicrafts. Cultural property and heritage
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.57 - Artist Paints and Related Materials

Relations

• Replaces: ASTM D5724-99 - Standard Specification for Gouache Paints
• Effective Date: 01-Jul-2005
• Replaced By: ASTM D5724-06 - Standard Specification for Gouache Paints
• Effective Date: 01-Apr-2006
• Referred By: ASTM D4303-10(2022) - Standard Test Methods for Lightfastness of Colorants Used in Artists' Materials
• Effective Date: 01-Jul-2005

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 5724 – 05
Standard Specification for
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Gouache Paints
This standard is issued under the fixed designation D5724; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
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1. Scope Colour Index
1.1 This specification establishes requirements for compo-
3. Terminology
sition, physical properties, performance, and labeling of
3.1 Definitions:
gouache paints.
3.1.1 colour index name, n—consists of the category (type
1.2 This specification covers pigments, vehicles, and addi-
ofdyeorpigment),generalhue,andanassignednumbergiven
tives. Requirements are included for pigment identification,
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to a colorant in the Colour Index as an international identifi-
lightfastness, and consistency.
cation system.
1.3 Table 1 lists some pigments meeting the lightfastness
3.1.1.1 Discussion—For example, the Colour Index Name
requirements in this specification. In order to identify other
of one phthalocyanine blue pigment is Pigment Blue 15 (PB
pigments that meet these requirements, instructions are given
15).
for test specimen preparation. Test methods for determining
3.1.2 colour index number, n—a five-digit number given in
relative lightfastness are referenced.
the Colour Index that describes the chemical constitution of a
1.4 The values stated in SI units are to be regarded as the
colorant.
standard. The values given in parentheses are for information
3.1.2.1 Discussion—For example, the Colour Index Num-
only.
ber of one phthalocyanine blue pigment is 74160.
2. Referenced Documents 3.2 Definitions of Terms Specific to This Standard:
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3.2.1 gouache paint, n—a pigment dispersion in a water
2.1 ASTM Standards:
soluble gum/resin vehicle that dries water soluble and is
D185 Test Methods for Coarse Particles in Pigments,
formulated primarily for relatively opaque and matte applica-
Pastes, and Paints
tions.
D279 Test Methods for Bleeding of Pigments
3.3 Appearance terms used in this standard are defined in
D476 Classification for Dry Pigmentary Titanium Dioxide
Terminology E284.
Products
D823 Practices for Producing Films of Uniform Thickness
4. Significance and Use
of Paint, Varnish, and Related Products on Test Panels
4.1 This specification establishes quality requirements and
D1210 TestMethodforFinenessofDispersionofPigment-
provides a basis for common understanding among producers,
Vehicle Systems by Herman-Type Gage
distributors, and users.
D1535 Test Method for Specifying Color by the Munsell
4.2 It is not intended that all paints meeting the require-
System
ments be identical nor of uniform excellence in all respects.
D4236 Practice for Labeling Art Materials for Chronic
Variations in manufacture, not covered by this specification,
Health Hazards
maycausesomeartiststopreferonebrandoveranother,either
D4303 TestMethodsforLightfastnessofPigmentsUsedin
of which may be acceptable under this specification.
Artists’ Paints
E284 Terminology of Appearance
5. Labeling Requirements
2.2 Other Documents:
5.1 Pigment(s) Identification:
5.1.1 Every label shall include for each pigment contained
in the paint the information underlined in Table 1, which
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This specification is under the jurisdiction ofASTM Committee D01 on Paint
includes the Common Name, Colour Index Name, and any
and Related Coatings, Materials, andApplications and is the direct responsibility of
additional terms necessary to identify the form of the pigment.
Subcommittee D01.57 on Artist Paints and Related Materials.
Current edition approved July 1, 2005. Published August 2005. Originally
approved in 1995. Last previous edition approved in 1999 as D5724–99.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM The Society of Dyers and Colourists, Colour Index, 3rd ed., 5 volumes and
Standards volume information, refer to the standard’s Document Summary page on revisions, Available from the American Association of Textile Chemists and
the ASTM website. Colorists, P.O. Box 12215, Research Triangle Park, NC 27709.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5724–05
5.1.2 The complete pigment identification given in Table 1, 5.3 Lightfastness—The label shall contain the word“ Light-
which also includes the Colour Index Number and a simple fastness” followed by the appropriate rating, I, or II, as given
chemicaldescription,shallbegiveninanappropriateproducer for each pigment in Table 1.
publication.Manufacturersareencouragedtoputthiscomplete 5.3.1 Lightfast
...