1、Designation: D5724 06 (Reapproved 2010)Standard Specification forGouache Paints1This standard is issued under the fixed designation D5724; 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 paren
2、theses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification establishes requirements for compo-sition, physical properties, performance, and labeling ofgouache paints.1.2 This specification c
3、overs 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
4、 givenfor test specimen preparation. Test methods for determiningrelative lightfastness are referenced.1.4 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.2. Referenced Documents2.1 ASTM Standards:2D185 Test Methods for Coarse
5、Particles in PigmentsD279 Test Methods for Bleeding of PigmentsD476 Classification for Dry Pigmentary Titanium DioxideProductsD823 Practices for Producing Films of Uniform Thicknessof Paint, Varnish, and Related Products on Test PanelsD1210 Test Method for Fineness of Dispersion of Pigment-Vehicle S
6、ystems by Hegman-Type GageD1535 Practice for Specifying Color by the Munsell SystemD4236 Practice for Labeling Art Materials for ChronicHealth HazardsD4303 Test Methods for Lightfastness of Colorants Used inArtists MaterialsE284 Terminology of Appearance2.2 Other Documents:Colour Index33. Terminolog
7、y3.1 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
8、 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 Num-ber of one phthalocyanine blue pigment is 74160.3.2 Definitions of Terms Specific to This Standar
9、d:3.2.1 gouache paint, na pigment dispersion in a watersoluble gum/resin vehicle that dries water soluble and isformulated primarily for relatively opaque and matte applica-tions.3.3 Appearance terms used in this standard are defined inTerminology E284.4. Significance and Use4.1 This specification e
10、stablishes 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,ma
11、y 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 the information underlined in Table 1, which1This specificatio
12、n is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, andApplications and is the direct responsibility ofSubcommittee D01.57 on Artist Paints and Related Materials.Current edition approved Dec. 1, 2010. Published December 2010. Originallyapproved in 1995. Last pr
13、evious edition approved in 2006 as D5724 06. DOI:10.1520/D5724-06R10.2For 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
14、website.3The Society of Dyers and Colourists, Colour Index, 3rd ed., 5 volumes andrevisions, Available from the American Association of Textile Chemists andColorists, P.O. Box 12215, Research Triangle Park, NC 27709.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken
15、, PA 19428-2959, United States.includes the Common Name, Colour Index Name, and anyadditional terms necessary to identify the form of the pigment.TABLE 1 Suitable Pigments ListNOTE 1Underlined information in the table and lightfastness category shall be included on every label.KEYLightfastness Categ
16、ory:Lightfastness I Excellent LightfastnessLightfastness II Very Good LightfastnessAbbreviations used in Colour Index Names:PB Pigment BluePBk Pigment BlackPBr Pigment BrownPG Pigment GreenPO Pigment OrangePR Pigment RedPV Pigment VioletPW Pigment WhitePY Pigment YellowAR Acid RedBR Basic RedPigment
17、 Notations in Parenthesis:(CC) Concentrated cadmium pigments may contain up to 15 % barium sulfate for color control.Cadmium-barium pigments contain a much higher content amount of barium sulfate.(DL) May darken in strong light(LF) Lightfast type(NA) Colour index name or number not assigned(RS) Red
18、shade(BS) Blue shade(SM) Sensitive to moisture(SS) Sensitive to hydrogen sulfide(OP) Opaque typeColor IndexNameLigthfastness Categeory Common Name and Chemical Class Color Index NumberYELLOWSPY 3 I Arylide Yellow I0G, with option of adding the name Hansa Yellow Light, arylide yellow 11710PY 6 I Aryl
19、ide Yellow, arylide yellow 11670PY 35 I Cadmium (hue designation), concentrated cadmium zinc sulfide (CC), (SM) 77205PY 37 I Cadmium (hue designation), concentrated cadmium sulfide (CC), (SM) 77199PY 42 I Mars Yellow or Iron Oxide Yellow, synthetic synthetic hydrated iron oxide 77492PY 43 I Yellow O
20、chre, natural hydrated iron oxide 77492PY 53 I Nickel Titanate Yellow, oxides of nickel, antimony and titanium 77788PY 65 II Arylide Yellow RN, with option of adding Hanas Yellow RN, aryhde yellow 11740PY 74 2GX70 II Arylide Yellow 2GX70, Hansa Yellow 2GX70, arylide yellow (OP) 11741PY 109 I Isoindo
21、linone Yellow G, tetrachroloisoindolinone NAPY 110 I Isoindolinone Yellow R, tetrachroloisoindolinone 56280PY 139 I Isoindoline Yellow, isoindoline NAPY 170 II Diarylide Yellow, diarylide yellow 21104ORANGESPO 5 I Dinitraniline Orange, dinitraniline (SM) 12075PO 20 I Cadmium (hue designation), conce
22、ntrated cadmium sulfo-selenide 77202PO 36 I Benzimidazolone (hue designation) HL, benzimidazolane 11780PO 43 I Perinone Orange, perinone (DL) 71105PO 73 II Pyrrcle Orange, Pyrrolopyrrol NAREDSPR 5 II Naphthol ITR, naphthol ITR 12490PR 9 II Naphthol AS-OL, naphthol AS-OL 12460PR 14 II Naphthol AS-D,
23、naphthol AS-D 12380PR 101 I Mars Red or Iron Oxide Red, synthetic iron oxide 77491PR 108 I Cadmium (hue designation), concentrated cadmium-seleno sulfide (CC) 77202PR 113 I Cadmium Vermilion Red Light, Medium or Deep, cadmium mercury sulfide (CC) 77201PR 122 II Quinacridone (hue designation), g quin
24、acridone 73915PR 170 F3RK-70 II Naphthol Red, naphtol carbamide (DL) 12475PR 188 I Napthol AS, naphthol AS 12467PV 19 I Quinacridone (hue designation),g quinacridone red 73900VIOLETSPV 14 I Cobalt Violet, cobalt phosphate 77360PV 19 I Quinacridone (hue designation), quinacridone violet b 73900PV 23
25、II Dioxadine (hue designation), carbazole dioxazine 51319BLUESPB 15 I Phthalocyanine Blue, or Pthalo Blue, copper phthalocyanine 74160PB 17:1 II Phthalocyanine Blue Lake, or Pthalo Blue Lake, trisulfonated copper phthalocyanine 74200:1PB 27 I Prussian Blue, Milori Blue, alkali ferric ferrocyanide 77
26、510D5724 06 (2010)2TABLE 1 ContinuedPB 28 I Cobalt Blue, oxides of cobalt and aluminum or cobalt aluminate 77346PB 29 I Ultramarine Blue, complex silicate of sodium and aluminum with sulfur, or sodium alumino-sulphosilicate77007PB 33 I Manganese Blue, barium manganate with barium sulfate 77112PB 35
27、I Cerulean Blue, oxides of cobalt and tin or cobalt stannate 77368GREENSPG 7 I Phthalocyanine Green, or Phthalo Green, chlorinated copper phthalocyanine 74260PG 17 I Chromium Oxide Green, anhydrous chromium sesquioxide 77288PG 18 I Viridian, hydrous chromium sesquioxide 77289PG 19 I Cobalt Green, ox
28、ides of cobalt and zinc, or cobalt zincate 77335PG 23 I Green Earth, or Terre Verte, natural ferrous silicate containing magnesium and aluminumpotassium silicates77009PG 36 I Phthalocyanine Green or Phthalo Green, chlorinated and brominated copper phthalocyanine 74265BROWNSAPBr 7 I Burnt Sienna, cal
29、cined natural iron oxide 77492PBr 7 I Burnt Umber, calcined natural iron oxide containing manganese 77492PBr 7 I Raw Sienna, natural iron oxide 77492PBr 7 I Raw Umber, natural iron oxide containing manganese 77492PBr 11 I Magnesium Ferrite, synthetic iron oxide containing magnesium oxide 77495PBr 24
30、 I Chrome Titanate Yellow, oxides of chrome, antimony and titanium 77310PBr 25 I Benzimidazolone Brown, monoazo benzimidazolone 12510BLACKSPBk 1 I Jet Black, aniline black 50440PBk 6 I Lamp Black, nearly pure amorphous carbon 77266PBk 7 I Carbon Black, nearly pure amorphous carbon 77266PBk 9 I Ivory
31、 Black or Bone Black, amorphous carbon produced by charring animal bones 77267WHITESBPW 4 I Zinc White, zinc oxide with option of adding the name Chinese White 77947PW 5 I Lithopone, zinc sulfide coprecipitated with barium sulfate 77115PW 6 I Titanium White, titanium dioxide (rutile or anatase) with
32、 option of including some bariumsulfate or zinc oxide77891PW 7 I Zinc Sulfide, zinc sulfide 77975AColor Index Number 77491 can be used as an alternate to 77492 for PBr 7.BInformation on white pigments is given in Appendix X3.5.1.2 The complete pigment identification given in Table 1,which also inclu
33、des the Colour Index Number and a simplechemical description, shall be given in an appropriate producerpublication. Manufacturers are encouraged to put this completeidentification on the container label when label size permits.5.1.3 The common name shall be placed on the front of thelabel and shall
34、be the name of the paint except as described in5.1.5 and 5.1.6. Other identification may be placed elsewhereon the container.5.1.4 The colour index name may be spelled out in full orabbreviated depending on the size of the label. Example:Pigment Blue 15, or Pig. Blue 15 or PB 15.5.1.5 Substituted Pi
35、gmentsIn the case of substituted pig-ments, the word “Hue” in equal size letters shall follow in thetitle, on the front of the tube, and immediately after the nameof the pigment that has been simulated. Directly below the title,the common name from Table 1 of the pigment(s) used shall begiven in let
36、ters no less than the next type size smaller than thetitle; or if more than one pigment is used, then 5.1.7 coveringmixed pigments can be followed. For example:CADMIUM RED MEDIUM HUE(Naphthol Red AS-OL)COBALT BLUE HUE(Mixture)5.1.6 Proprietary names or optional names may be usedprovided the common n
37、ame(s) given in Table 1 appears on thefront of the label directly under the proprietary or optionalname in letters no less than the next type size smaller than theproprietary or optional name; or if more than one pigment isused, then 5.1.7 covering mixed pigments, can be followed.5.1.7 Mixed Pigment
38、sArtists paints containing more thanone pigment comply with this specification if all coloredpigments included in the mixture are on the suitable pigmentlist (Table 1) and provided the mixture itself has passed allother test requirements in this specification. The commonnames for the pigments in the
39、 mixture, or the word “Mixture”must appear under the title in letters no less than the next typesize smaller than the title. For example:PERMANENT GREEN LIGHT PERMANENT GREEN LIGHT(Cadmium Yellow Light, (Mixture)Phthalocyanine Blue)If the word “Mixture” is used under the title, the commonnames of th
40、e pigments in the mixture, as given in Table 1 mustbe listed along with their Colour Index Names and thelightfastness category of the mixture somewhere on the label.The lightfastness category shall be that of the least lightfastpigment. This lightfastness category may be changed if themixture is tes
41、ted in accordance with Test Methods D4303 andthe results indicating a different category are submitted toASTM Subcommittee D01.57 for evaluation.5.2 Provide on the Label:5.2.1 Identification of gum/resin used.5.3 LightfastnessThe label shall contain the word “Light-fastness” followed by the appropri
42、ate rating, I, or II, as givenfor each pigment in Table 1.5.3.1 Lightfastness I pigments, when made into paint speci-mens as described in Section 7 and exposed, tested, and ratedin accordance with Test Methods D4303, shall have a colordifference (DE*ab) of 4 or less CIELAB units between thespecimens
43、 measured before and after exposure.D5724 06 (2010)35.3.2 Lightfastness II pigments, when made into paintspecimens as described in Section 8 and exposed, tested, andrated in accordance with Test Methods D4303, shall have acolor difference (DE*ab) of more than 4.0 but not more than8.0 CIELAB units be
44、tween the specimens measured before andafter exposure.5.3.3 Pigments were placed in a lightfastness category onthe basis of either known historical performance in art works orthe ratings from four lightfastness tests conducted as describedin Test Methods D4303. Results from further tests on these, o
45、rother pigments, are solicited by Subcommittee D01.57.5.3.3.1 The lightfastness category of a pigment shall bechanged if results from several further tests conducted inaccordance with Test Methods D4303 and approved by ASTMSubcommittee D01.57, establish a different lightfastness cat-egory than the o
46、ne given in Table 1.5.3.3.2 Additional pigments shall be placed in Table 1 afterthey have been tested for lightfastness in accordance with TestMethods D4303 and the test results submitted to ASTMSubcommittee D01.57 for evaluation, provided the resultsdemonstrate that the pigments have the lightfastn
47、ess ratingsrequired for Lightfastness I or Lightfastness II, as just de-scribed.5.3.4 For information and to establish nomenclature, pig-ments in Lightfastness III, IV and V categories are given inTable X1.1 in Appendix X1, but are not to be used in paintconforming to this specification.5.3.4.1 Ligh
48、tfastness III pigments have a color difference ofmore than 8.0 but not more than 16.0 CIELAB units.5.3.4.2 Lightfastness IV pigments have a color difference ofmore than 16.0 but not more than 24.0 CIELAB units.5.3.4.3 Lightfastness V pigments have a color difference ofmore than 24.0 CIELAB units.5.4
49、 ToxicityAll products and labeling must conform to theFederal Hazardous Substances Act and to Practice D4236.5.5 Statement of Conformance“Conforms to ASTMSpecification D5724.” or “Conforms to ASTM D5724” or“Conforms to the quality requirements ofASTM D5724.” Thisstatement may be combined with other conformance state-ments, such as, “Conforms to the quality and health require-ments of ASTM Specification D5724 and Practice D4236.”5.6 AddressInclude on the label (1) the name and addressof the manufacturer or importer, and (2) the country ofmanufacture.6. Quality Assura
