Trace C4-C9 Saturates in High Purity Aromatics by GC

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

24-07-2002

Publisher

American Society for Testing and Materials

Describes gas chromatographic method for determining individual and composite trace non-aromatic hydrocarbon impurities in olefin-free aromatic mixtures. C[8] and lower boiling paraffins and naphthenes are determined individually and then summed by carbon number and carbon type.

This gas chromatographic method is for determining individual and composite trace non-aromatic hydro-carbon impurities in olefin-free aromatic mixtures. C₈ and lower boiling paraffins and naphthenes are de-termined individually and then summed by carbon number and carbon type. C₉ non-aromatics are reported as a composite. The method is not quantitative for C₃ and lower molecular weight hydrocarbons due to their volatility. The range of quantitation for each component is 1 to 2000 mass-ppm. The range of quanti-tation for each composite depends upon the number of components in the composite.

An alternative method providing similar information is UOP Method 868, Trace Saturates in High Purity Aromatics by GC. It uses a two-column system to report paraffins and naphthenes by carbon number through C10.

DocumentType	Standard
Pages	11
PublisherName	American Society for Testing and Materials
Status	Current

ASTM UOP 868 : 1988	Trace Saturates in High Purity Aromatics by GC
ASTM D 4307 : 2017 : REDLINE	Standard Practice for Preparation of Liquid Blends for Use as Analytical Standards
ASTM U 09 : 2013	Precision Statements in UOP Methods