Browse Publications Technical Papers 2001-01-3598

IP 451 Aromaticity as an Alternative Base Oil Quality Parameter for ASTM D 2007 Saturates 2001-01-3598

This paper describes the relation between the ASTM D 2007 saturates and the IP 451 aromaticity by molecular modeling and by a direct correlation using a wide range of commercial base oils. The correlation shows that the 90 % mass ASTM D 2007 limit defined in the API and ATIEL base oil group definitions corresponds with a 1.7 % mole IP 451 limit. The results demonstrate that the IP 451 aromaticity can be used to replace the ASTM D 2007 saturates content in the API and ATIEL base oil quality definitions and interchange guidelines. This method provides advantages in terms of precision and is also more significant in describing base oil oxidation performance.


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