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ASTM D2597

2010 Edition, May 1, 2010

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Standard Test Method for Analysis of Demethanized Hydrocarbon Liquid Mixtures Containing Nitrogen and Carbon Dioxide by Gas Chromatography

Includes all amendments and changes through Change/Amendment , May 1, 2010


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Product Details:

  • Revision: 2010 Edition, May 1, 2010
  • Published Date: May 1, 2010
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 12
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This test method covers the analysis of demethanized liquid hydrocarbon streams containing nitrogen/air and carbon dioxide, and purity products, such as an ethane/propane mix that fall within the compositional ranges listed in Table 1. This test method is limited to mixtures containing less than 5 mol % of heptanes and heavier fractions.

The heptanes and heavier fractions, when present in the sample, are analyzed by either (1) reverse flow of carrier gas after n-hexane and peak grouping or (2) precut column to elute heptanes and heavier first as a single peak. For purity mixes without heptanes and heavier, no reverse of carrier flow is required. (Caution—In the case of samples with a relatively large C6+ or C7+ fraction and where precise results are important, it is desirable to determine the molecular weight (or other pertinent physical properties) of these fractions. Since this test method makes no provision for determining physical properties, the physical properties needed can be determined by an extended analysis or agreed to by the contracting parties.)

The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

NOTE 1—Annex A2 states values in manometric units, which are to be regarded as the standard in that section. Approximate SI units (from conversion) are given in parentheses.

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 specific hazard statements see Annex A3.