Synthetic poly-alpha-olefin with a viscosity of 3 or more but not more than 9 centistokes (measured at 100 ° Celsius according to the ASTM D 445 method), obtained by polymerization of dodecene with or without:

-not more than 40 % by weight of tetradecene and/or

-not more than 2 % by weight decene and/or

-not more than 2 % by weight of hexadecene
Tariff preference