ASTM_D_850_-_21.pdf

Designation:D85021Standard Test Method forDistillation of Industrial Aromatic Hydrocarbons and RelatedMaterials1This standard is issued under the fixed designation D850;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()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers the distillation of industrialaromatic hydrocarbons and related materials of relativelynarrow boiling ranges from 30 to 250C.WarningThis testmethod is not applicable for styrene which will exothermicallypolymerize during the distillation process.1.2 The following applies to all specified limits in this testmethod:for the purposes of determining conformance to thistest method,an observed or calculated value shall be roundedoff“to the nearest unit”in the last right-hand digit used inexpressing the specification limit,in accordance with therounding-off method of Practice E29.1.3 WarningMercury has been designated by EPA andmany state agencies as a hazardous material that can causecentral nervous system,kidney and liver damage.Mercury,orits vapor,may be hazardous to health and corrosive tomaterials.Caution should be taken when handling mercury andmercury-containing products.See the applicable productSafety Data Sheet(SDS)for details and EPAs website(http:/www.epa.gov/mercury/faq.htm)for additional information.Users should be aware that selling mercury or mercury-containing products,or both,in your state may be prohibited bystate law.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 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 use.For specific hazard statements,see 6.5.2,6.6.1,and Section 7.1.6 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 TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1078 Test Method for Distillation Range of Volatile Or-ganic LiquidsD3437 Practice for Sampling and Handling Liquid CyclicProductsD4790 Terminology of Aromatic Hydrocarbons and RelatedChemicalsD6809 Guide for Quality Control and Quality AssuranceProcedures for Aromatic Hydrocarbons and Related Ma-terialsE1 Specification for ASTM Liquid-in-Glass ThermometersE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE133 Specification for Distillation EquipmentE220 Test Method for Calibration of Thermocouples ByComparison TechniquesE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method2.2 Other Document:OSHA Regulations,29 CFR paragraphs 1910.1000 and1910.120033.Terminology3.1 Definitions:3.1.1 See Terminology D4790 for definitions of terms usedin this test method.1This test method is under the jurisdiction of ASTM Committee D16 onAromatic,Industrial,Specialty and Related Chemicals and is the direct responsi-bility of Subcommittee D16.04 on Instrumental Analysis.Current edition approved Feb.1,2021.Published February 2021.Originallyapproved in 1945.Last previous edition approved in 2018 as D850 181.DOI:10.1520/D0850-21.2For 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 standards Document Summary page onthe ASTM website.3Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance 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.14.Summary of Test Method4.1 The distillation of a 100-mL sample of industrial aro-matic hydrocarbons and related materials is carried out via acarefully controlled distillation wherein temperature readingsare noted for the first drop of distillate and when 5,10,andeach additional 10 up to 90,and 95%of the sample hasdistilled over.The temperature corresponding to the dry pointis also noted.5.Signifi