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Significance and Use
High-purity ethylene is required as a feedstock for some manufacturing processes, and the presence of trace amounts of carbon dioxide and some hydrocarbons can have deleterious effects. This method is suitable for setting specifications, for use as an internal quality control tool and for use in development or research work.
1.1 This test method covers the determination of carbon dioxide, methane, ethane, acetylene, and other hydrocarbons in high-purity ethylene. Hydrogen, nitrogen, oxygen, and carbon monoxide are determined in accordance with Test Method D2504. The percent ethylene is obtained by subtracting the sum of the percentages of the hydrocarbon and nonhydrocarbon impurities from 100. The method is applicable over the range of impurities from 1 to 500 parts per million volume (ppmV).
1.2 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. For some specific hazard statements, see Section 6.
1.3 The values stated in acceptable metric units are to be regarded as the standard. The values in parentheses are for information only.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D2504 Test Method for Noncondensable Gases in C2 and Lighter Hydrocarbon Products by Gas Chromatography
D4051 Practice for Preparation of Low-Pressure Gas Blends
E260 Practice for Packed Column Gas Chromatography
F307 Practice for Sampling Pressurized Gas for Gas Analysis
ICS Number Code 71.080.10 (Aliphatic hydrocarbons)