ASTM_E_2036_-_15.pdf

Designation:E203615Standard Test Method forNitrogen Trichloride in Liquid Chlorine by High PerformanceLiquid Chromatography(HPLC)1This standard is issued under the fixed designation E2036;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 This test method uses high performance liquid chroma-tography(HPLC)to determine nitrogen trichloride levels inliquid chlorine at the 0.1 to 600 g/g(ppm)range.Solventsamples from chlorine production facilities containing veryhigh concentrations of nitrogen trichloride may be analyzed bydilution with methanol.1.2 Review the current safety data sheet(SDS)for detailedinformation concerning toxicity,first aid procedures,and safetyprecautions.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.Specific hazardstatements are given in Section 8.2.Referenced Documents2.1 ASTM Standards:2E180 Practice for Determining the Precision of ASTMMethods for Analysis and Testing of Industrial and Spe-cialty Chemicals(Withdrawn 2009)3E806 Test Method for Carbon Tetrachloride and Chloroformin Liquid Chlorine by Direct Injection(Gas Chromato-graphic Procedure)2.2 Federal Standards:4CFR 173 Title 49 Transportation;Shippers General Re-quirements for Shipments and Packaging,including Sec-tions:173.304 Charging of Cylinders with Liquefied Com-pressed Gas173.314 Requirements for Compressed Gases in TankCars173.315 Compressed Gases in Cargo Tanks and PortableTank Containers2.3 Other Document:5Chlorine Institute Pamphlet No.152 Safe Handling of Chlo-rine Containing Nitrogen Trichloride3.Summary of Test Method3.1 Weighed samples of chlorine are delivered into a cooledgraduated centrifuge tube.One mL of cooled HPLC eluent isadded before the chlorine is allowed to evaporate.After thechlorine has evaporated the remaining eluent is analyzeddirectly on the HPLC for nitrogen trichloride concentration.3.2 In-process solvent samples from chlorine productionfacility may be analyzed by dilution in methanol followed bydirect HPLC analysis of the diluted solution.4.Significance and Use4.1 This test method was developed for the determination ofnitrogen trichloride in samples of carbon tetrachloride liquidtaken from the compressor suction chiller bottoms of chlorineproduction plants and other places in the plants that may collectand concentrate nitrogen trichloride to levels that could ex-plode.The test method was then modified to measure the lowerlevels of nitrogen trichloride observed in product liquid chlo-rine.This test method is sensitive enough to measure the levelsof nitrogen trichloride observed in the normal production ofliquid chlorine.4.2 This test method for nitrogen trichloride will require thedilution(100:1)of highly concentrated in-process samples tobring them within the working range of the analysis.1This test method is under the jurisdiction of ASTM Committee E15 onIndustrial and Specialty Chemicalsand is the direct responsibility of SubcommitteeE15.02 on Product Standards.Current edition approved June 1,2015.Published June 2015.Originallyapproved in 1999.Last previous edition approved in 2007 as E2036-07.DOI:10.1520/E2036-15.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from U.S.Government Publishing Office,732 N.Capitol St.,NW,Washington,DC 20401-0001,http:/www.gpo.gov.5Available from The Chlorine Institute(CI),1300 Wilson Blvd.,Ste.525,Arlington,VA 22209,http:/www.chlorineinstitute.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Interferences5.1 This test method is selective for nitrogen trichloride.Atthis time there is no known interference in the materials usedin this test method.5.2 Contact with any metal surfaces should be avoided dueto the corrosive nature of the sample.5.3 Nitrogen trichloride is decomposed by UV light,heat orstrong acid.The presence of metal ions will increase the rate ofdecomposition.Special care should be taken to avoid exposureof the samples to direct sunlight.Samples and standards shouldbe analyzed immediately upon preparation.Samples not im-mediately analyzed must be stored in dry ice until just beforeanalysis.6.Apparatus6.1 Ahigh