The Structure and Purity of a Reference Dye Standard used for Quantification of C.I. Solvent Red 164 in Fuels

Journal Article · Wed Apr 15 04:00:00 UTC 2009 · Dyes and Pigments, 82(3):307-315

DOI:https://doi.org/10.1016/j.dyepig.2009.01.015· OSTI ID:958451

Harvey, Scott D; Buchko, Garry W; Lucke, Richard B; Wright, Cherylyn W; Melville, Angela M; Scott, Anthony J; Wright, Bob W

This research describes a comprehensive analytical approach to provide structure verification and purity determination for Morton Red 26. Studies presented in this paper, based on application of numerous traditional and advanced analytical techniques, provide definitive proof that Morton Red 26 and Solvent Red 26 are not chemically equivalent and, further, that Morton Red 26 and NIST #2037 have identical chemical structures, a result that stands in contrast to common perception. Additional analytical studies, again based on the application of numerous analytical methodologies, determined that Morton Red 26 was approximately 72 percent pure, a finding that stands in contrast to the 99 percent purity value certified by the supplier (Morton International). Possible explanations and implications are briefly discussed. Several of the Morton Red 26 impurities were tentatively identified, and a host of additional impurities were partially characterized by NMR, TLC, GC/MS, and HPLC/MS studies.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 958451
• Report Number(s): PNNL-SA-59681; 26591; 400480000
• Journal Information: Dyes and Pigments, 82(3):307-315, Journal Name: Dyes and Pigments, 82(3):307-315 Journal Issue: 3 Vol. 82; ISSN 0143-7208
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
CALIBRATION STANDARDS
DYES
Environmental Molecular Sciences Laboratory
IMPURITIES
MORPHOLOGY
VERIFICATION