1、Designation:D534617(Reapproved 2021)Standard Test Method forDetermination of the Pour Point of Petroleum Oil Used inFatliquors and Softening Compounds1This standard is issued under the fixed designation D5346;the number immediately following the designation indicates the year oforiginal adoption or,
2、in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of the pourpoint of petroleum oils used in th
3、e softening and stuffing ofleather,and in the manufacture of fatliquors and other soften-ing and stuffing compounds.This test method was derived fromTest Method D97 and ALCA Method H-18.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in this
4、standard.1.3 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
5、 use.1.4 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 World Trade Organization TechnicalBarrier
6、s to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D97 Test Method for Pour Point of Petroleum ProductsE1 Specification for ASTM Liquid-in-Glass ThermometersE2251 Specification for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision Liquids2.2 Other Document:ALCA Method H-18
7、 Cloud and Pour Point33.Significance and Use3.1 This test method is intended to determine the pour pointof petroleum oils used in the softening and stuffing of leather,as well as those used in the manufacture of products for suchpurpose.The pour point of petroleum oils is measured for thepurpose of
8、quality assurance.4.Apparatus(see Fig.1)4.1 Test Jar,clear cylindrical glass,flat bottom,30 to33.5-mm inside diameter,and 115 to 125-mm height.Toindicate sample height the jar should be marked with a line54 mm 6 3 mm above the inside bottom.4.2 Thermometers,having ranges shown below and con-forming
9、to the requirements prescribed in Specifications E1 orE2251 for thermometers:TemperatureThermometer NumberThermometerRangeASTMIPHigh cloud and pour38 to+50 C5C or S5C1CLow cloud and pour80 to+2 C6C2CMelting point+32 to+127 C61C63C4.2.1 Since separation of liquid column thermometers occa-sionally occ
10、urs and may escape detection,thermometersshould be checked immediately prior to the test and used onlyif they prove accurate within 6 1 C(for example ice point).4.3 Cork,to fit the test jar,bored centrally for the testthermometer.4.4 Jacket,metal or glass,watertight,cylindrical,flatbottom,115 mm in
11、depth,42 mm to 50 mm inside diameter.Itmust be supported firmly in a vertical position in the coolingbath of 4.7 so that not more than 25 mm projects out of thecooling medium.4.5 Disk,cork or felt,6 mm thick to fit loosely inside thejacket.4.6 Gasket,to fit snugly around the outside of the test jara
12、nd loosely inside the jacket.The gasket may be made ofrubber,leather,or other material that is elastic enough to clingto the test jar and hard enough to hold its shape.Its purpose isto prevent the test jar from touching the jacket.4.7 Bath or Baths,maintained at prescribed temperatureswith a firm su
13、pport to hold the jacket vertical.The requiredbath temperatures may be obtained by refrigeration if1This test method is under the jurisdiction of ASTM Committee D31 on Leatherand is the direct responsibility of Subcommittee D31.08 on Fats and Oils.Current edition approved Dec.1,2021.Published Januar
14、y 2022.Originallyapproved in 1993.Last previous edition approved in 2017 as D5346 17.DOI:10.1520/D5346-17R21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standard
15、s Document Summary page onthe ASTM website.3Available from American Leather Chemists Assn.,Texas Tech University,P.O.Box 45300,Lubbock,TX 79409.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in acc
16、ordance 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 Technical Barriers to Trade(TBT)Committee.1?available,otherwise by suitable freezing mixtures.Freezingmixtures commonly used for temperatures down to thoseshown are as follows:For Temperatures DownIce and water9 CCrushed ice and sodium chloride crystals12 CCrushed ice and cal
