ASTM_D_1614_-_09.pdf

Designation:D161409Standard Test Method forAlkalinity in Acetone1This standard is issued under the fixed designation D1614;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.Scope*1.1 This test method covers the determination in acetone ofalkalinity calculated as ammonia(NH3).1.2 The following applies to all specified limits in thisstandard;for purposes of determining conformance with thisstandard,an observed value or a calculated value shall berounded off“to the nearest unit”in the last right-hand digitused in expressing the specification limit,in accordance withthe rounding-off method of Practice E29.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4For specific hazard information and guidance,consultthe suppliers Material Safety Data Sheet.1.5 This standard does not purport to address the safetyconcerns,if any,associated with its use.It is the responsibilityof whoever uses this standard to consult and establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.Specific hazardstatements are given in Section 7.2.Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE200 Practice for Preparation,Standardization,and Storageof Standard and Reagent Solutions for Chemical Analysis3.Summary of Test Method3.1 The specimen is added to water previously neutralizedto the methyl red end point.If alkalinity is detected,it is titratedwith 0.05 N H2SO4and reported as weight percent of NH3.4.Significance and Use4.1 This test method provides a measurement of alkalinityin acetone.The results of this measurement can be used forspecification acceptance.5.Apparatus5.1 Buret,10-mL,graduated in 0.05-mL subdivisions.5.2 Erlenmeyer Flask,250-mL capacity.6.Reagents and Materials6.1 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 ascertained that the reagent is ofsufficiently high purity to permit its use without lessening theaccuracy of the determination.6.2 Purity of WaterUnless otherwise indicated,referencesto water shall be understood to mean reagent water conformingto Type IV or higher purity of Specification D1193.6.3 Methyl Red Indicator Solution(1 g/L)Dissolve 0.1 gof methyl red in 100 mL of methanol,ethanol,or isopropanol.Prepare a fresh solution at least once a month as needed.6.4 Sodium Hydroxide,Standard Solution(0.05 N)Prepare and standardize a 0.05 N sodium hydroxide(NaOH)solution(Note 1)in accordance with Sections 12 to 17 ofPractice E200.NOTE1Alternatively,potassium hydroxide(KOH)solution may beused.6.5 Sulfuric Acid,Standard Solution(0.05 N)Prepare andstandardize a 0.05 N sulfuric acid(H2SO4)solution.7.Hazards7.1 Acetone is a highly flammable liquid.1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.35 on Solvents,Plasticizers,and Chemical Intermediates.Current edition approved June 1,2009.Published June 2009.Originallyapproved in 1958.Last previous edition approved in 2008 as D1614 08.DOI:10.1520/D1614-09.2For 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.3Reagent Chemicals,American Chemical Society Specifications,AmericanChemical Society,Washington,DC.For suggestions on the testing of reagents notlisted by the American Chemical Society,see Analar Standards for LaboratoryChemicals,BDH Ltd.,Poole,Dorset,U.K.,and the United States Pharmacopeiaand National Formulary,U.S.Pharmacopeial Convention,Inc.(USPC),Rockville,MD.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 7.2 The reagents sulfuric acid and sodium hydroxide arehazardous as they can cause severe burns of the skin or eyes.8.Procedure8.1 To a 250-mL Erlenmeyer flask,add 50 mL of water and3 drops of methyl red indicator solution.If the water is basic,neutralize to the first faint pink coloration with 0.05 N H2SO4.If acidic,neutralize to the first yellow coloration with 0.05 NNaOH solution and t