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Description of ASTM-E1746 2008ASTM E1746 - 08Standard Test Method for Sampling and Analysis of Liquid Chlorine for Gaseous ImpuritiesActive Standard ASTM E1746 | Developed by Subcommittee: E15.02 Book of Standards Volume: 15.05 ASTM E1746Significance and Use It is very difficult to exclude sample contamination by ambient air during the process of sampling. The levels of atmospheric contamination caused by poor sampling methods are often equal to or larger than the levels of the gaseous impurities present in the chlorine. This results in markedly elevated levels of detected impurities. As specifications become tighter, it becomes more important to measure the gaseous impurity levels in liquid chlorine correctly. Additional problems are experienced in the sampling of liquefied gases for the gaseous impurities. The gaseous impurities reach an equilibrium between the liquid phase and vapor phase in a sample bomb. The quantity of gases measured in any particular sample containing both liquid and vapor will be a function of the amount of vapor space in the sample bomb. This test method avoids the presence of liquid in the sample bomb. 1. Scope 1.1 This test method covers sampling and analysis of liquid chlorine for the determination of oxygen (200 to 400 ? g/g), nitrogen (400 to 800 ? g/g), and carbon dioxide (800 to 1000 ppm) content at levels normally seen in liquid chlorine. Hydrogen and carbon monoxide concentrations in liquid chlorine are typically at or below the detection limit of this test method. Note 1The minimum detection limit of hydrogen using a 1 cm 3 gas sample and argon carrier gas is 100 to 200 ? g/g. The detection limit for the other components is significantly lower. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 Review the current Material Safety Data Sheets (MSDS) for detailed information concerning toxicity, first aid procedures, and safety precautions. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazards statements are given in Section 7.
Code of Federal Regulations 173.315 Compressed Gases in Cargo Tanks and Portable Tank ContainersOther Document ChlorineInstitutePam Sampling Liquid ChlorineKeywords analysis; carbon dioxide; carbon monoxide; gas chromatography; hydrogen; inert gases; liquid chlorine; nitrogen; oxygen; Carbon dioxide content; Carbon monoxide (CO); Gas chromatography (GC)--atmospheric analysis/gases; Gaseous environments; Impurities; Inert gases; Liquid chemicals; Nitrogen; Oxygen; Sampling air/atmospheric materials/applications; Sampling chemicals; Sampling gaseous materials/applications; ICS Code ICS Number Code 71.060.10 (Chemical elements) DOI: 10.1520/E1746-08 ASTM International is a member of CrossRef. ASTM E1746The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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