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The raw linseed oil acetone foots test. I. A centrifuge tube and method for rapid determination
Author(s) -
Freyer Egbert,
Shelburne Victor B.
Publication year - 1950
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02634982
Subject(s) - centrifuge , centrifugal force , tube (container) , linseed oil , reproducibility , materials science , composite material , engineering , mechanical engineering , chromatography , chemistry , physics , organic chemistry , rotational speed , nuclear physics
Summary A rapid method, requiring less than one hour to apply, has been developed for determining the acetone foots content of linseed oils using centrifugal force to compact the foots layer instead of the force of gravity. Application of the method requires the use of a centrifuge tube of novel design. Conditions known to affect the results obtained by the A.S.T.M. gravity test have been investigated as they apply to the centrifuge test and found to have little or no effect on the results of the latter test. Correlation of the percentage of centrifugal foots under stated conditions with percentage of foots by the gravity method has been determined for both the heated and chilled tests. Under the conditions chosen for the centrifugal test the magnitude of the heated test result is about the same as the processing shrink sustained when these foots are removed in practice. The reproducibility of the method, based on this work, is equal to or better than the gravity test now in use for trading linseed oil.