1、Designation:D 2575 70(Reapproved 1998)Standard Methods of TestingPolymerized Fatty Acids1This standard is issued under the fixed designation D 2575;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
2、 parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 These methods cover selection and application of pro-cedures for testing polymerized fatty acids specifying the useof other ASTM methods.1.2 The pr
3、ocedures appear in the following sections:SectionASTMMethodTerminology3.Sampling4D 1466Acid Value5D 1980Saponification Value6D 1962Unsaponifiable Matter7D 1965Water,(Karl Fischer)8D 1364Color,Gardner9D 15442.Referenced Documents2.1 ASTM Standards:D 1364 Test Method for Water in Volatile Solvents(Kar
4、lFischer Reagent Titration Method)2D 1466 Test Method for Sampling Liquid Oils and FattyAcids Commonly Used in Paints,Varnishes,and RelatedMaterials3D 1544 Test Method for Color of Transparent Liquids(Gardner Color Scale)4D 1962 Test Method for Saponification Value of DryingOils,Fatty Acids,and Poly
5、merized Fatty Acids3D 1965 Test Method for Unsaponifiable Matter in DryingOils,Fatty Acids,and Polymerized Fatty Acids3D 1980 Test Method for Acid Value of Fatty Acids andPolymerized Fatty Acids33.Terminology3.1 Definitions:3.1.1 polymerized fatty acidspolycarboxylic acids pro-duced by polymerizing
6、acids from animal or vegetable fats andoils,in either an ester or free acid state,by means of heat aloneor catalytically.4.Sampling4.1 Sample the material in accordance with Test MethodD 1466.5.Acid Value5.1 Determine acid value in accordance with Test MethodD 1980.5.2 The precision of the method(95
7、%confidence level forpolymerized fatty acids)in the range of values from 162 to 195is as follows:repeatability,61.5;reproducibility,62.4.6.Saponification Value6.1 Determine saponification value in accordance with TestMethod D 1962.6.2 The precision of the method(95%confidence level)inthe range of va
8、lues from 187 to 197 is as follows:repeatabil-ity,6 10.7;reproducibility,611.1.7.Percent of Unsaponifiable Matter7.1 Determine the percent of unsaponifiable matter in ac-cordance with Method D 1965.7.2 The precision of the method(95%confidence level)inthe range of values from 0.3 to 2.6 is as follow
9、s:repeatabil-ity,6 0.53;reproducibility,60.75.8.Water by the Karl Fisher Method8.1 Determine moisture in accordance with Test MethodD 1364.8.2 The precision of the method(95%confidence level)inthe range of values from 0.0 to 1.2%is as follows:repeatabil-ity,60.16;reproducibility,60.17.9.Color by the
10、 Gardner Method9.1 The Gardner color system was chosen as best suited forreporting the colors of these products.9.2 Determine the color in accordance with Test MethodD 1544.9.3 The precision of the method(95%confidence level)inthe range of values from 1 to 18 is as follows:repeatability,60.6 unit,re
11、producibility,61.6 units.10.Keywords10.1fatty acids;polymerized fatty acids.1These methods are under the jurisdiction of ASTM Committee D-1 on Paintsand Related Coatings,Materials,and Applications and is the direct responsibility ofD 01.32 on Drying Oils.Current edition effective Dec.24,1970.Origina
12、lly issued 1967.Replaces D 2575 67 T.2Annual Book of ASTM Standards,Vol 06.04.3Annual Book of ASTM Standards,Vol 06.03.4Annual Book of ASTM Standards,Vol 06.01.1AMERICAN SOCIETY FOR TESTING AND MATERIALS100 Barr Harbor Dr.,West Conshohocken,PA 19428Reprinted from the Annual Book of ASTM Standards.Co
13、pyright ASTMThe American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connectionwith any item mentioned in this standard.Users of this standard are expressly advised that determination of the validity of any suchpatent rights,and the ri
14、sk of infringement of such rights,are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised,either reapproved or withdrawn.Your comments are invited either for revision of this
15、 standard or for additional standardsand should be addressed to ASTM Headquarters.Your comments will receive careful consideration at a meeting of the responsibletechnical committee,which you may attend.If you feel that your comments have not received a fair hearing you should make yourviews known to the ASTM Committee on Standards,100 Barr Harbor Drive,West Conshohocken,PA 19428.D 25752
