Abstract
THE absorption spectra of o-, m-, and p-fluorophenol in vapour phase have been examined with a Hilger E1 large quartz spectrograph. A number of plates were taken with different cell lengths and at temperatures ranging from 26° C to 60° C; while the temperature of the reservoir containing the substance varied from −15° C to 60° C. The bands in each case appear well defined with the cell of length 70 cm maintained at temperature 26° C. A hydrogen lamp was used as the source of continuum for the ultra-violet region. Ilford special rapid N.40 plates were used to photograph the spectra in about half an hour.
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