ASTM D2549-23 pdf download – Standard Test Method For Separation Of Representative Aromatics And Nonaromatics Fractions Of High-Boiling Oils By Elution Chromatography.
1.1 This test method outlines the process for separating and determining representative fractions of aromatics and non-aromatics from hydrocarbon mixtures that have boiling points ranging from 232 °C to 538 °C (450 °F to 1000 °F). Alternative procedures are available for separating either 2 g or 10 g of the hydrocarbon mixture.
NOTE 1: Certain components may not be eluted from the chromatographic column for certain sample types under the conditions specified in this method.
NOTE 2: Test Method D2007 serves as an alternative approach for separating high-boiling oils into polar compounds, aromatics, and saturates fractions.
1.2 An alternative procedure is available for handling samples that boil below 232 °C (450 °F) but have a 5% point above 178 °C (350 °F), as determined by Test Method D2887. Details of this procedure can be found in Appendix X1.
1.3 The values presented in acceptable SI units are considered standard. The values provided in parentheses are for informational purposes only.
