Accession Number:

AD0679572

Title:

DETERMINATION OF THE ESTER COMPOSITION OF NEOPENTYL POLYOL ESTER LUBRICANTS.

Descriptive Note:

Interim rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s):

Report Date:

1968-10-11

Pagination or Media Count:

19.0

Abstract:

Methods of gas-liquid chromatography and thin-layer chromatography have been applied to the analysis of neopentyl polyol ester lubricants. By direct programmed-temperature gas chromatography of the lubricants, the components were separated according to volatility in most cases resolution was adequate for semiquantitative analysis. Gas-liquid chromatographic analysis of the free acids produced by hydrolysis of the sample revealed the acyl composition. The parent polyols were determined by programmed-temperature gas chromatography of their valerate esters. A semipreparative thin-layer chromatographic method permitted the isolation of the three main ester types--trimethylol propane, pentaerythritol, and dipentaerythritol for further analysis. By a combination of these analytical methods the actual ester composition of the lubricant may be determined. Such detailed information had not previously been accessible by analytical procedures. Author

Subject Categories:

  • Organic Chemistry
  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE