1、Designation:D48304(Reapproved 2018)Standard Test Method forUnsulfonated Residue of Petroleum Plant Spray Oils1This standard is issued under the fixed designation D483;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last r
2、evision.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 unsul-fonated residue in plant spray oils of petroleum origin andapplies only to the
3、 petroleum oil content.It provides a measureof the degree of refinement of plant spray oils by determiningthe extent to which the oil is attacked by 98.61%sulfuric acidunder closely standardized conditions.Since the relationshipbetween unsulfonated residue and the actual composition of theoil is not
4、 known,this test method should be applied only formeasuring the degree of refinement and not for the determina-tion of aromatics or olefins,or both.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This standard does not pu
5、rport 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.1.4 This international standard w
6、as 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
7、Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterD1250 Guide for Use of the Petroleum Measurement TablesD1298 Test Method for Density,Relative Density,or APIGravity of Crude Petroleum and Liquid Petroleum Prod-ucts by Hydrometer MethodD4052 Test Method for Density,Relative Density,a
8、nd APIGravity of Liquids by Digital Density MeterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum Products3.Terminology3.1 Definitions:3.1.1 unsulfonated residue,n in oils,that portion of an oilremaining unsulfonated
9、 after treatment with concentrated sul-furic acid.4.Summary of Test Method4.1 A measured volume of sample is shaken with 98.61%sulfuric acid at 100 C in a Babcock bottle,shaking mechani-cally for 10 s at 10 min intervals.The volume not absorbed bythe acid is a measure of the unsulfonated residue in
10、the sample.5.Significance and Use5.1 This test method is useful for distinguishing betweenoils that are adaptable to various types of spraying application,with a higher unsulfonated oil being required for leaf sprayingas compared to dormant vegetation application.6.Apparatus6.1 Sulfonation FlaskThe
11、flask is shown in Fig.A1.1 anddescribed in Annex A1.6.2 Meniscus Viewing Lens,focusing type,consisting ofeyepiece and objective to facilitate reading the meniscus witha minimum of parallax,is recommended.6.3 Water BathsTwo water baths maintained at 25 C 60.5 C and 99.5 C to 100 C,and conforming to t
12、he require-ments prescribed in Annex A1.6.4 Shaking MachineThe exact design described in theappendix is required for uniform control of shaking andprecision results.Hand shaking is permissible if technique isdeveloped to correlate results by machine shaking.6.5 CentrifugeA centrifuge as described in
13、 Annex A1 isrecommended.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricantsand is the direct responsibility ofSubcommittee D02.06 on Analysis of Liquid Fuels and Lubricants.Current edition approved Oct.1,2018.Published November 2018.Orig
14、inallyapproved in 1961.Last previous edition approved in 2014 as D483 04(2014).DOI:10.1520/D0483-04R18.2For 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 Docu
15、ment Summary page onthe ASTM website.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 Princi
16、ples for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 7.Reagents7.1 Purity of ReagentsReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is intended thatall reagents shall conform to the specifications of the Commit-tee on Analytical Reagents of the American Chemical Society,where such specifications are available.3Other grades may beused,provided it is first as