ASTM_D_4571_-_22.pdf

Designation:D457122Standard Test Methods forRubber Compounding MaterialsDetermination of VolatileMaterial1This standard is issued under the fixed designation D4571;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.1.Scope1.1 These test methods cover the determination of the lossof volatile materials in various rubber chemicals based on themass loss upon heating at 70C.1.2 These test methods for the determination of volatilematter include the following materials:SectionSulfur7 13p-Phenylenediamine antidegradants14 211.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 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:2D4483 Practice for Evaluating Precision for Test MethodStandards in the Rubber and Carbon Black ManufacturingIndustriesD4676 Classification for Rubber Compounding MaterialsAntidegradants3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1“lot”samplea production sample representative of astandard production unit,normally referred to as“the sample.”3.1.2 test unitthe actual material used in the analysis.Itmust be representative of the“lot”sample.4.Summary of Test Methods4.1 The rubber chemicals are weighed before and afterheating at 70C.4.2 Sample preparation,procedures,calculations,and pre-cision statements will be found in each section dealing with aparticular rubber chemical.5.Significance and Use5.1 These test methods are suitable for the determination ofvolatile material in rubber compounding materials.The testmethods may be used for quality control,product acceptance,or research and development.Classification D4676 prescribespercent volatile material as an important characteristic ofrubber antidegradants.6.Apparatus6.1 Weighing Bottle,low form,82 cm3capacity.Bottledimensions recommended:diameter 70 mm,height 33 mm.6.2 Explosion-proof Oven,capable of temperature regula-tion of 70 6 2C.Recommended:non-vented,non-air-circulating.6.3 Analytical Balance,sensitive to 0.1 mg.6.4 Desiccator.SULFUR7.Scope7.1 This test method covers the measurement of the loss ofvolatiles from sulfur at 70C.The volatile components consistof moisture,low boiling organic components,and light weightamorphous sulfur.1These test methods are under the jurisdiction of ASTM Committee D11 onRubber and Rubber-like Materials and are the direct responsibility of SubcommitteeD11.11 on Chemical Analysis.Current edition approved June 1,2022.Published June 2022.Originallyapproved in 1986.Last previous edition approved in 2021 as D4571 21.DOI:10.1520/D4571-22.2For 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.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.18.Summary of Test Method8.1 The sulfur specimen is weighed before and after heatingfor 2 h 6 5 min at 70C.The measured loss of mass is thevolatile material content.9.Significance and Use9.1 This test method determines the volatile material insulfur at 70C.By ascertaining that the volatiles are lower thana predicted maximum limit,it may safely be concluded thatmoisture(water)is below that limit and is not present inexcessive amounts.9.2 Testing at temperatures higher than 70C results ingreater volatilization of sulfur.10.Procedure10.1 Dry a clean weighing bottle and stopper(stopperremoved)for 30 min in the specified oven set at 70C.Placethe bottle and stopper in the desiccator and allow them to coolto room temperature.Weigh the bottle with a stopper to thenearest 0.1 mg(A).10.2 Add approximately 5 g sulfur to the bottle and weighagain(B).Make sure the sulfur covers the base of the bottleevenly.10.3 Place the uncover