ASTM_D_5067_-_16_2021.pdf

Designation:D506716(Reapproved 2021)Standard Specification forArtists Watercolor Paints1This standard is issued under the fixed designation D5067;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 Thisspecificationestablishesrequirementsforcomposition,physical properties,performance,and labeling ofartists watercolor paints.1.2 This specification covers pigments,vehicles,and addi-tives.Requirements are included for pigment identification,lightfastness,and consistency.1.3 Table 1 lists some pigments meeting the lightfastnessrequirements in this specification.In order to identify otherpigments that meet these requirements,instructions are givenfor test specimen preparation.Test methods for determiningrelative lightfastness are referenced.1.4 The values stated in SI units are to be regarded asstandard.The values given in parentheses are for informationonly.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D185 Test Methods for Coarse Particles in PigmentsD1210 Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type GageD4236 Practice for Labeling Art Materials for ChronicHealth HazardsD4303 Test Methods for Lightfastness of Colorants Used inArtists MaterialsE284 Terminology of Appearance3.Terminology3.1 Definitions:3.1.1 Colour Index Name,nconsists of the category(typeof dye or pigment),general hue,and an assigned number givento a colorant in the Colour Index3as an international identifi-cation system.3.1.1.1 DiscussionFor example,the Colour Index Nameof one phthalocyanine blue pigment is Pigment Blue 15(PB15).3.1.2 Colour Index Number,na five-digit number given inthe Colour Index that describes the chemical constitution of acolorant.3.1.2.1 DiscussionFor example,the Colour Index Numberof one phthalocyanine blue pigment is 74160.3.1.3 Appearance terms used in this standard are defined inTerminology E284.3.2 Definitions of Terms Specific to This Standard:3.2.1 watercolor paint,na pigment dispersion in a watersoluble gum/resin vehicle that dries water soluble and isintended primarily for transparent applications.4.Significance and Use4.1 This specification establishes quality requirements andprovides a basis for common understanding among producers,distributors,and users.4.2 It is not intended that all paints meeting the require-ments be identical nor of uniform excellence in all respects.Variations in manufacture,not covered by this specification,may cause some artists to prefer one brand over another,eitherof which may be acceptable under this specification.5.Labeling Requirements5.1 Pigment(s)Identification:5.1.1 Every label shall include for each pigment containedin the paint(1)the information underlined in Table 1(whichincludes the Common Name,Colour Index Name,and anyadditional terms necessary to identify the form of the pigment),and(2)the appropriate Lightfastness Category.1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.57 on Artist Paints and Related Materials.Current edition approved Nov.1,2021.Published November 2021.Originallyapproved in 1990.Last previous edition approved in 2016 as D5067 16.DOI:10.1520/D5067-16R21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Colour Index,3rd ed.,The Society of Dyers and Colourists,London,197175,five vols and revisions.Available from the American Association of TextileChemists and Colorists,PO Box 12215,Research Triangle Park,NC 27709.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1?TABLE 1 Suitable Pigments ListNOTE1Underlined information and the lightfastness category in the table shall be included on every label.Key:Lightfastness Category:Lightfastness IExcellent LightfastnessLightfastness IIVery Good LightfastnessAbbreviations Used for Colour Index Names:BRBasic RedNRNatural RedPBPigment BluePBkPigment Bla