(31)P-NMR Analysis of Zinc Dialkyl(Diaryl)-Dithiophosphate in Lubricating Oil.

Abstract

To assure that the oils furnished the government are of the same formulations as the oils originally qualified, a new method has been developed to examine Zinc dialkyl(diaryl)dithiophosphate (ZDDP) additives by using P-NMR. Two finished oils and primary alkyl-ZDDP, secondary alkyl-ZDDP, and aryl-ZDDP were examined. P-NMR was found to be a better method than other existing analytical methods to analyze the change of ZDDP additives in full formulated oil without pre-separation. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1982
Accession Number
ADA129083

Entities

People

  • Shing-bong Chen

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Air Force
  • Air Force Facilities
  • Chemical Shifts
  • Chemical Synthesis
  • Chemistry
  • Environmental Protection
  • Lubricating Oils
  • Magnetic Resonance
  • Materials
  • Measurement
  • Military Research
  • Nuclear Magnetic Resonance
  • Nuclear Spins
  • Relaxation Time
  • Resonance
  • Spectra

Fields of Study

  • Chemistry

Readers

  • Petroleum Engineering