1、Designation:D120905(Reapproved 2019)Standard Test Method forColor of Clear Liquids(Platinum-Cobalt Scale)1This standard is issued under the fixed designation D1209;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revi
2、sion.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method describes a procedure for the
3、visualmeasurement of the color of essentially light colored liquids(Note 1).It is applicable only to materials in which thecolor-producing bodies present have light absorption charac-teristics nearly identical with those of the platinum-cobalt colorstandards used.NOTE1A procedure for estimating colo
4、r of darker liquids,describedfor soluble nitrocellulose base solutions,is given in Guide D365.1.2 For purposes of determining conformance of an ob-served or a calculated value using this test method to relevantspecifications,test result(s)shall be rounded off“to the nearestunit”in the last right-han
5、d digit used in expressing thespecification limit,in accordance with the rounding-off methodof Practice E29.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 For specific hazard information,see the Material SafetyData Sheet
6、.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.For
7、 specific hazard statements see Section 6.1.6 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 Worl
8、d Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D156 Test Method for Saybolt Color of Petroleum Products(Saybolt Chromometer Method)D365 Guide for Soluble Nitrocellulose Base SolutionsD1193 Specification for Reagent WaterE29 Practice for Using
9、Significant Digits in Test Data toDetermine Conformance with SpecificationsE202 Test Methods for Analysis of Ethylene Glycols andPropylene GlycolsE346 Test Methods for Analysis of Methanol(Withdrawn2017)33.Significance and Use3.1 The property of color of a solvent varies in importancewith the applic
10、ation for which it is intended,the amount ofcolor that can be tolerated being dependent on the colorcharacteristics of the material in which it is used.The paint,varnish,and lacquer solvents,or diluents commercially avail-able on todays market normally have little or no color.Thepresence or absence
11、of color in such material is an indicationof the degree of refinement to which the solvent has beensubjected or of the cleanliness of the shipping or storagecontainer in which it is handled,or both.3.2 For a number of years the term“water-white”wasconsidered sufficient as a measurement of solvent co
12、lor.Several expressions for defining“water-white”gradually ap-peared and it became evident that a more precise color standardwas needed.This was accomplished in 1952 with the adoptionof Test Method D1209 using the platinum-cobalt scale.Thistest method is similar to the description given in StandardM
13、ethods for the Examination of Water and Waste Water4and isreferred to by many as“APHAColor.”The preparation of theseplatinum-cobalt color standards was originally described by A.1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications
14、and is the direct responsibility ofSubcommittee D01.35 on Solvents,Plasticizers,and Chemical Intermediates.Current edition approved April 1,2019.Published April 2019.Originallyapproved in 1952.Last previous edition approved in 2011 as D1209 05(2011).DOI:10.1520/D1209-05R19.2For referenced ASTM stand
15、ards,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.3The last approved version of this historical standard is referenced onwww.astm.org.4Standar
16、d Methods for the Examination of Water and Waste Water,M.Franson,Ed.,American Public Health Assoc.,14th ed.,1975,p.65.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 Te
