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Accession Number:
ADB811139
Title:
Colorimetric Determination of Fluorine in Fluoro-Organic Compounds
Corporate Author:
VIRGINIA UNIV CHARLOTTESVILLE
Report Date:
1944-04-14
Abstract:
The fluorine content of organic fluorine compounds can be determined by refluxing the sample, in solution in hexanol-1, with sodium, extracting the liberated fluoride ion with water and estimating the fluoride ion in the aqueous extract by a colorimetric procedure based on the bleaching of a thorium-alizarin lake. The method will detect 0.1 ppm of fluoride but for most accurate results, the concentration should be about 1 ppm. At this concentration the accuracy is or - 5 when color comparisons are made in 50 ml Nessler tubes 220 mm. Values for fluorine were in agreement with those obtained by the volumetric method in which the fluoride ions are titrated with thorium alizarin sulfonate as indicator.
Descriptive Note:
Progress rept.
Pages:
0014
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
OEMSR-139
File Size:
1.24MB
