Abstract

Considerable and unexpected thermal stability has been found with a calcium complex hydrocarbon grease proposed as a non-polar stationary phase. Although the polarity is unsatisfactory, improved stability has been achieved by the addition of an antioxidant. The use of an antioxidant increased significantly the thermal stability of low-polarity hydrogenated Apiezon M, which has been reported as an acceptable non-polar basic stationary phase for use of high temperatures.

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