ASTM_D_1025_-_10_2015e1.pdf

Designation:D102510(Reapproved 2015)1Standard Test Method forNonvolatile Residue of Polymerization-Grade Butadiene1,2This standard is issued under the fixed designation D1025;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.1NOTESubsection 5.6 was revised editorially in May 2015.1.Scope1.1 This test method covers the determination of nonvolatilematerial in polymerization-grade butadiene.1.2 WARNINGMercury has been designated by manyregulatory 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 product Ma-terial Safety Data Sheet(MSDS)for details and EPAswebsitehttp:/www.epa.gov/mercury/faq.htmfor addi-tional information.Users should be aware that selling mercuryand/or mercury containing products into your state or countrymay be prohibited by law.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 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 to determine theapplicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:E1 Specification for ASTM Liquid-in-Glass Thermometers3.Summary of Test Method3.1 A measured volume of liquid butadiene is allowed toevaporate at room temperature from a small glass evaporatingdish until only residue remains.The evaporation is thencompleted by heating the dish to a constant weight.4.Significance and Use4.1 This test method is used to determine if there is anyheavy material in the butadiene.It is possible that thesematerials could be deleterious to a polymerization reaction.5.Apparatus5.1 Balance,Analytical,capable of weighing to the nearest0.1 mg.5.2 Evaporating Dish,glass,80 mm in diameter and 45 mmin height.5.3 Graduated Cylinder,capacity of 25 mL,graduated in0.2 mL subdivisions.5.4 Oven,capable of maintaining a temperature of 105 C 65 C.5.5 Cooling Vessel,tightly covered,such as a glassdesiccator,for cooling the evaporating dish before weighing.5.6 Thermometer,range from 40 C to 50 C,graduated in1 C intervals,conforming to the requirements for ASTMThermometer 1C as prescribed in Specification E1 is satisfac-tory.Temperature measuring devices that cover the tempera-ture range of interest,such as the ASTM 1C thermometer,orliquid-in-glass thermometers,thermocouples,or platinum re-sistance thermometers that provide equivalent or better accu-racy and precision may be used.6.Preparation of Apparatus6.1 Clean the evaporating dishes with a chromic-acid solu-tion or other suitable cleaning agent before each test.(WarningCauses severe burns.A recognized carcinogen.Strong oxidizer.Contact with organic material may cause fire.)Remove the dishes from the cleaning solution with stainless-steel forceps and handle only with forceps thereafter.Wash thedishes thoroughly,first with tap water,then with distilled water,and dry in the oven at 105 C for about 1 h,or until constantweight is obtained.Before weighing,cool the dishes for at least30 min in the cooling vessel.1This test method is under the jurisdiction of Committee D02 on PetroleumProducts,Liquid Fuels,and Lubricants and is the direct responsibility of Subcom-mittee D02.D0.04 on C4 Hydrocarbons.Current edition approved April 1,2015.Published May 2015.Originallyapproved in 1949.Last previous edition approved in 2010 as D1025 10.DOI:10.1520/D1025-10R15E01.2This test method is an adaptation of one developed and cooperatively tested bythe Butadiene Producers Committee on Specifications and Methods of Analysis ofthe Office of Rubber Reserve.It appears in the Butadiene Laboratory Manual,Officeof Rubber Reserve,as Method No.2.1.56.2.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 7.Procedure7.1 Weigh the evaporating dish to the nearest 0.1 mg on theanalytical balance.7.2 Chill the evaporating dish to ice temperature.Cool thebutadiene and the graduated cylinder to about 20 C.(WarningExtremely flammable gas under pressure.Mayform explosive peroxides upon exposure to air.Harmful ifinhaled.Irritating to eyes,skin,and mucous membranes.)Determine the sample temperature to the nearest 1 C andtransfer 25 mL 6 1 mL of sample to the evaporating dish.Record the sample volume and temperature.7.3 Allow the sample to evaporate at room temperature in awell-ventilated hood.When evaporation is complete,place theevaporating dish in an oven at 105 C 6 5 C until a weightconstant to 0.1 mg