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ASTM UOP 935 : 1994

Current
Current

The latest, up-to-date edition.

Mercaptan Types In Kerosine by NMR
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

07-29-2002

Publisher

American Society for Testing and Materials

Defines methods for determining primary, secondary and tertiary mercaptans (thiols) in kerosines up to several thousand mass-ppm, based on the procedure previously suggested by E. Rafii, et al. (1,2).

This method is for determining primary, secondary and tertiary mercaptans (thiols) in kerosines up to several thousand mass-ppm, based on the procedure previously suggested by E. Rafii, et al. (1,2). The lower limit of detection by 119Sn {H} decoupled, refocused Insensitive Nucleus Enhancement by Polarization Transfer (INEPT) Nuclear Magnetic Resonance (NMR) spectroscopy without preconcentration is 40 mass-ppm per mercaptan type in the kerosine. Lower concentrations can be determined using a specified distillation procedure. The only known interferences are thiophenols and branched alcohols, such as isopropyl and butyl alcohols (see NOTE). The method relies upon the quantitative preparation of soluble tri-n-butyl tin derivatives of all of the thiols present.

DocumentType
Standard
Pages
16
PublisherName
American Society for Testing and Materials
Status
Current

ASTM UOP 163 : 2010 Hydrogen Sulfide and Mercaptan Sulfur in Liquid Hydrocarbons by Potentiometric Titration

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Hardcopy - English
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