Patent ID: 9625440
Date: 2017-04-18
CPC Classifications: C10L,G01N,Y10T

Claim:
1. A method of marking a hydrocarbon fuel or octane comprising the step of adding to said hydrocarbon fuel or octane, as a tracer compound in an amount of 1 ppbv to 1 ppmv of said hydrocarbon fuel or octane, a compound of Formula I: wherein at least one of R 1 -R 4 is selected from a group consisting of: i. a bromine or fluorine atom; ii. a partially or fully halogenated alkyl group; iii. a branched or cyclic C iv. an aliphatic substituent linking two positions selected from R v. a phenyl group substituted with a halogen atom, an aliphatic group or halogenated aliphatic group; and further wherein none of R