ASTM_D_1510_-_13.pdf

Designation:D151013Standard Test Method forCarbon BlackIodine Adsorption Number1This standard is issued under the fixed designation D1510;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 Department of Defense.1.Scope1.1 This test method covers the determination of the iodineadsorption number of carbon black.1.1.1 Method A is the original test method for this determi-nation and Method B is an alternate test method usingautomated sample processing and analysis.1.2 The iodine adsorption number of carbon black has beenshown to decrease with sample aging.New SRB HT IodineStandards have been produced that exhibit stable iodinenumber upon aging.One or more of these SRB HT IodineStandards are recommended for daily monitoring(x-charts)toensure that the results are within the control limits of theindividual standard.Use all SRB HT Iodine Standards forstandardization of iodine testing(see Section 8)when targetvalues cannot be obtained.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 determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1799 Practice for Carbon BlackSampling PackagedShipmentsD1900 Practice for Carbon BlackSampling Bulk Ship-mentsD4483 Practice for Evaluating Precision for Test MethodStandards in the Rubber and Carbon Black ManufacturingIndustriesD4821 Guide for Carbon BlackValidation of Test MethodPrecision and BiasE969 Specification for Glass Volumetric(Transfer)Pipets2.2 European Standards:3ISO/EN/DIN 8655-3 Piston-operated volumetric apparatus-Part 3:Piston burettes3.Summary of Test Methods3.1 In Test Method A,a weighed sample of carbon black istreated with a portion of standard iodine solution and themixture shaken and centrifuged.The excess iodine is thentitrated with standard sodium thiosulfate solution,and theadsorbed iodine is expressed as a fraction of the total mass ofblack.3.2 In Test Method B,a weighed sample of carbon black istreated with a portion of standard iodine solution using anautomated sample processor where the mixture is stirred,settled and aliquoted for automatic titration.The excess iodineis titrated with standard sodium thiosulfate solution,and theadsorbed iodine is expressed as a fraction of the total mass ofblack.4.Significance and Use4.1 The iodine adsorption number is useful in characterizingcarbon blacks.It is related to the surface area of carbon blacksand is generally in agreement with nitrogen surface area.Thepresence of volatiles,surface porosity,or extractables willinfluence the iodine adsorption number.Aging of carbon blackcan also influence the iodine number.5.Apparatus5.1 Vials,glass,optically clear type,with polyethylenestoppers,45 cm3.5.2 Gravity Convection Drying Oven,capable of maintain-ing 125 6 5C.5.3 Buret,either of the following may be used:1This test method is under the jurisdiction of ASTM Committee D24 on CarbonBlack and is the direct responsibility of Subcommittee D24.21 on Carbon BlackSurface Area and Related Properties.Current edition approved July 1,2013.Published August 2013.Originallyapproved in 1957.Last previous edition approved in 2012 as D1510 12.DOI:10.1520/D1510-13.2For 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 International Organization for Standardization(ISO),1,ch.dela Voie-Creuse,CP 56,CH-1211 Geneva 20,Switzerland,http:/www.iso.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.3.1 Digital Buret,25-cm3capacity,with 0.01-cm3incre-ment counter and zero reset control,or5.3.2 Buret,glass 25-cm3,Class A,side-arm filling,gradu-ated in 0.05 cm3and with automatic zero.5.4 Repetitive Dispenser,25-cm3capacity,60.1%repro-ducibility and calibrated to within 60.03-cm3accuracy.5.5 Balance,analytical,with 0.1-mg sensitivity.5.6 Centrifuge,with minimum speed of 105 rad/s(1000 r/min).5.7 Volumetric Flask,2000-cm3with standard taper stopper.5.8 Funnel,large diameter,with standard taper joint to fitthe 2000-cm3flask.5.9 Glass Bottle,amber,2000-cm3,with standard taperstopper.5.10 Glass Jug,approximate capacity 20-dm3.5.11 Stirrer,approximately 300 by 300 mm for mixing.5.12 Stirrer,approximately 100 by 100 mm for titrating.5.13 Desiccator.5.14 Miscellaneous C