Ethanol’s discount to gasoline tightened on speculation that export demand is preventing the highest production rates in 16 months from refilling stockpiles of the gasoline additive. The spread between December contracts narrowed 1.02 cents to 88.62 cents a gallon as the most recent Energy Information Administration data shows stockpiles declining and the pace of foreign deliveries, as of August, at the highest since March. “We have seen stockpiles hit a record low,” said Chris Krukowski, an ethanol broker at SCB & Associates LLC in Chicago. “In general we are seeing tightness.” Denatured ethanol for December delivery fell 0.7 cent, or 0.4 percent, to $1.642 a gallon on the Chicago Board of Trade. Prices have fallen 21 percent this year. The November contract, which expires tomorrow, slumped 5 cents to $1.72. Gasoline for December delivery slipped 1.72 cents, or 0.7 percent, to $2.5282 a gallon on the New York Mercantile […]