STANDARD SAMPLE FOR METROLOGICAL SUPPORT OF MEASUREMENTS OF THERMOOXIDATIVE STABILITY OF JET ENGINE FUELS UNDER DYNAMIC CONDITIONS (VARIANTS) Russian patent published in 2023 - IPC C10L1/00 G01N33/22 

FIELD: analytical chemistry, in particular standard samples.

SUBSTANCE: A standard sample is proposed for metrological support of measurements of thermooxidative stability of jet engine fuels under dynamic conditions, containing chemically pure n-undecane, characterized by the fact that it additionally contains dodecane at the following component ratio, wt.%: n-undecane 15.0 and dodecane 85.0. A standard sample containing chemically pure n-undecane, chemically pure dodecane and chemically pure organosulfur compound - 1-heptanthiol is also proposed with the following component ratio, wt.%: dodecane 85.0, 1-heptanthiol 0.05 and n-undecane - the rest. The technical result of the invention is an increase in the reliability of the results of measuring the thermal-oxidative stability of jet engine fuels under dynamic conditions, a reduction in the duration of the certification process of laboratory installations DTS-2 and DTS-4, which determine the thermal-oxidative stability of jet engine fuels under dynamic conditions, an expansion of the nomenclature of reference samples for metrological testing of petroleum products.

EFFECT: The present invention enables to improve the reliability of measurement of thermal-oxidative stability of jet engine fuels under dynamic conditions.

2 cl, 6 tbl