1933-01-01

Temperature Effect on Determination of Gum in Gasoline 330048

THE paper 1 constitutes the fourth progress report to the Society on the investigation at the Bureau of Standards of the gumming characteristics of gasolines.
Previous work has shown that the relative gum contents of a series of gasolines are the same, regardless of the volume evaporated. In the present paper, experimental data are given which indicate the effect of variations in bath temperature on the determination of gum content. These data show that the relative gum contents of a series of gasolines are the same, regardless of the bath temperature.
Accordingly, it is concluded that any convenient volume of gasoline can be evaporated at any convenient temperature with equal significance. Preference is expressed for the evaporation at a temperature of 200 deg. cent. (392 deg. fahr.), due to the rapidity with which a determination of gum content can be made.

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