ASTM_D_1958_-_86_1995e1.pdf

Designation:D 1958 86(Reapproved 1995)e1Standard Test Method forChloroform Insoluble Matter in Oiticica Oil1This standard is issued under the fixed designation D 1958;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(e)indicates an editorial change since the last revision or reapproval.e1NOTEKeywords were added editorially in May 1995.1.Scope1.1 This test method covers the determination of the matterin oiticica oil that is insoluble in chloroform.It may also beused for other drying oils.1.2 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of whoever uses this standard to consult andestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.Aspecific hazard statement is given in Section 4.2.Significance and Use2.1 Mineral contamination in oiticica or other drying oils isinsoluble in chloroform while the natural components of the oilare soluble.This test method provides a means to determine thedegree of contamination by mineral matter.3.Reagent3.1 Chloroform(CHCl3)(PrecautionSee 4.1).4.Hazards4.1 Chloroform is a hazardous liquid that can be absorbedthrough the skin.Its vapor is hazardous through inhalation.Itis a narcotic.Use only with adequate ventilation(in a hood).For further information,see suppliers Material Safety DataSheet.5.Procedure5.1 Dissolve 10 g of the sample in sufficient chloroform toobtain a fluid solution.Filter through a dried and weighedGooch crucible,wash with chloroform until the oil is removed.Heat the crucible and residue,if present,at 105 6 2C,cool,and weigh.Repeat the heating and weighing until the weight isconstant to 0.1 mg.6.Calculation6.1 Calculate the percent of insoluble matter,I,in chloro-form as follows:I 5R/S!3 100where:R 5 residue,g,andS 5 sample used,g.7.Precision and Bias7.1 Precision and bias data were not established at the timethis test method was written.An effort is being made to obtainthe precision and,if obtainable,will be published in futurerevisions.This test method has been in use for many years,andits usefulness has been well established.8.Keywords8.1 chloroform insoluble matter;oiticica oilThe 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 risk 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 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 19428.1This test method is under the jurisdiction of ASTM Committee D-1 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.32 on Drying Oils.Current edition approved August 29,1986.Published October 1986.Originallypublished as D 1958 58.Last previous edition D 1958 85.1AMERICAN SOCIETY FOR TESTING AND MATERIALS100 Barr Harbor Dr.,West Conshohocken,PA 19428Reprinted from the Annual Book of ASTM Standards.Copyright ASTM