ASTM_D_2079_-_92_1998.pdf

Designation:D 2079 92(Reapproved 1998)Standard Test Method forNonvolatile Matter(Solids)in Fatty Quaternary AmmoniumChlorides1This standard is issued under the fixed designation D 2079;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 method was prepared jointly by the American Society for Testing and Materials and the American Oil Chemists Society.1.Scope1.1 This method covers the determination of nonvolatilematter(solids)in fatty quaternary ammonium chlorides.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.2.Summary of Test Method2.1 Volatile matter is evaporated under heat and vacuum andthe nonvolatile matter determined.3.Apparatus3.1 Vacuum Oven,with suitable controls for maintaining atemperature of 105 6 2C.3.2 Air Oven,with suitable controls for maintaining atemperature of 105 6 2C.4.Procedure4.1 If not a liquid,melt the sample using a water bath.Mixthe sample thoroughly and accurately weigh 0.7 to 1.0 g to 0.1mg into a 50-mL narrow-mouth Erlenmeyer flask.Place theflask in the air oven for 1 h at 105 6 2C.After about 15 minof oven time,rotate the flask gently to coat the specimen overthe entire bottom of the flask.Place the flask in a vacuum ovenfor 8 h at 105 6 2C and a vacuum(negative gage pressure)of27 to 29 in.Hg(absolute pressure of 25 to 35 mm Hg).Coolin a desiccator for12h and reweigh.5.Calculation5.1 Calculate the percent of nonvolatile matter(solids)asfollows:Nonvolatile matter solids!,%5R 3 100!/S(1)where:R=grams of residue,andS=specimen weight used,g.6.Precision and Bias6.1 Precision and bias were not established at the time thistest method was written.An effort is being made to obtain theprecision and,if obtainable,it will be published in futurerevisons.This test method has been in use for many years,andits usefulness has been well established.7.Keywords7.1 nonvolatile matter;quaternary ammonium chlorides;solids contentASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.Users of this standard are expressly advised that determination of the validity of any such patent rights,and the riskof 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 International Headquarters.Your comments will receive careful consideration at a meeting of theresponsible technical committee,which you may attend.If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards,at the address shown below.This standard is copyrighted by ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.Individual reprints(single or multiple copies)of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585(phone),610-832-9555(fax),or serviceastm.org(e-mail);or through the ASTM website(www.astm.org).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 March 15,1992.Published May 1992.Originallypublished as D 2079 62 T.Last previous edition D 2079 82(1987).1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.