Tagging materials for gasoline

Details Tagging materials for gasoline Tagging materials for gasoline

1995-06-06

1996-04-30

Howard, Jacqueline V.

Fuel and related compositions

Liquid fuels

585 10, 585 11, 585 14, C10L 116

Patent

active

055120660

ABSTRACT:
Gasolines are identified from one another by adding to at least one of the gasolines at least one tagging material which is unique to that gasoline. Each unique tagging material has a number average molecular weight of at least 15,000 and is present at a level of less than 1.0 ppm of the gasoline. In addition, each unique tagging material must be soluble in the composition to be tagged, must not vaporize or thermally degrade at temperatures below about 120.degree. C., must not contribute to degradation of hydrocarbon filterability: and must not contribute to engine harm. A sample of the gasoline is vaporized to form a liquid residue; and the liquid residue is analyzed for the presence of the tagging material in the residue to thereby identify the particular gasoline.

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