ASTM_D_1960_-_86_1995e1.pdf

Designation:D 1960 86(Reapproved 1995)e1Standard Test Method forLoss on Heating of Drying Oils1This standard is issued under the fixed designation D 1960;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.This standard has been approved for use by agencies of the Department of Defense.e1NOTEKeywords and an update statement on precision and bias were added editorially in May 1995.1.Scope1.1 This test method covers the determination of moistureand any other material that is volatile under the conditions ofthe test.It is applicable to all natural drying oils.NOTE1For solutions of drying oils in volatile organic solvents it isrecommended that Test Methods D 1259 or D 1644 be used.1.2 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 and health practices and determine the applica-bility of regulatory limitations prior to use.Specific hazardstatements are given in Section 5.2.Referenced Documents2.1 ASTM Standards:D 1259 Test Methods for Nonvolatile Content of ResinSolutions2D 1644 Test Methods for Nonvolatile Content of Varnishes23.Significance and Use3.1 Drying oils may contain small amounts of residualextraction solvent,moisture or other volatile adulterants thatmight interfere with their use.This test method provides ameans to measure the amount of volatile components at 105C.Oxidation of the oil could cause a weight gain at thistemperature,and this is minimized by blanketing the specimenwith inert gas.4.Apparatus and Materials4.1 Air Oven,maintained at 105 6 2C.4.2 Desiccator,containing efficient desiccant.4.3 Carbon Dioxide or Nitrogen Gas,(Warningsee 5.1)under pressure in cylinders.5.Hazards5.1 Carbon Dioxide and Nitrogen GasGas supplied incylinders is dangerous because of its extremely high pressure.Take care to prevent damage to cylinders,valves,and pressureregulators.Consult suppliers Material Safety Data Sheet.6.Procedure6.1 Weigh 10 g of sample to 0.1 mg,into a tared 50-mLflask.Heat in an air oven at 105 6 2C for 30 min,whilepassing a gentle stream of carbon dioxide or nitrogen into theneck of the flask.NOTE2Care must be taken to keep the surface of the oil blanketedwith inert gas throughout the test to prevent oxidation of the oil.6.2 Remove the flask from the oven,cool in a desiccator,and weigh to 0.1 mg.7.Calculation7.1 Calculate the percent loss on heating,L,as follows:L 5S 2 RS3 100where:S5 specimen weight before heating,g,andR5 residue weight after heating,g.8.Precision and Bias8.1 Precision and bias have not been determined.Thismethod has been in use for many years,and its usefulness hasbeen well established.9.Keywords9.1 drying oils;drying oils;loss in heating;drying oils;volatiles1This test method is under the jurisdiction of ASTM Committee D-1 on Paintand Related Coatings,Materials,andApplications,and is the direct responsibility ofSubcommittee D01.32 on Drying Oils.Current edition approved March 27,1986.Published May 1986.Originallypublished as D 1960 61.Last previous edition D 1960 85.2Annual Book of ASTM Standards,Vol 06.01.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.NOTICE:This standard has either been superceded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.The 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.D 19602NOTICE:This standard has either been superceded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.