* Rising prices may curb oil use in U.S., China
* Technicals show Brent to retrace to $119.79/bbl [
]* Coming Up: ECB rate decision 1145 GMT
By Florence Tan
SINGAPORE, April 7 (Reuters) - Brent crude dipped on Thursday in Asian trade after five straight days of gains, slipping below $122 a barrel on concern that rising prices will hurt demand from the United States and China, the world's two largest oil consumers.
Unrest in the oil exporting region in North Africa and the Middle East continues to support prices.
Brent crude <LCOc1> fell 52 cents to $121.78 a barrel at 0421 GMT after rising to a 2-1/2-year high above $123 on Wednesday.
U.S. crude futures <CLc1> declined 45 cents to $108.38 a barrel, after touching $109.15 on Wednesday, the highest since September 2008.
High crude prices are pushing up retail fuel prices worldwide, adding to the inflationary pressure governments already face from the rising cost of food and raw materials.
"Current price levels should have a negative impact on demand," said Tetsu Emori, a Tokyo-based commodities fund manager at Astmax Investments.
The latest data from the United States showed that gasoline and distillate demand has stalled while China raised retail prices to new record highs to ease the burden of higher crude prices for state refiners
U.S. government data on Wednesday showed gasoline demand at the world's top oil consumer fell 1.2 percent from year-ago levels. Gasoline demand should pick up as the driving season begins in the United States, but high prices would temper growth in consumption. [
]"(U.S.) demand will be challenged as higher retail prices and little wage growth lead to a rising burden of gasoline spending in U.S households' budget and disposable income," Harry Tchilinguirian, head of commodity markets strategy at BNP Paribas, said in an overnight note.
Gasoline stocks fell less than forecast while a rise in crude oil stocks were in line with expectations.
Tightening monetary policy in Europe could also slow demand for raw materials including oil there. The European Central Bank was expected to announce a rate rise later on Thursday.[
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CHINA RAISES PRICES
China, the world's second largest oil consumer, announced on Wednesday it will increase retail gasoline and diesel prices by up to 5.5 percent to ensure refiners produce enough to meet demand. [
]Analysts said the hike was too late and insufficient to cover crude costs which have risen around 20 percent since February. The disparity means the margins of state-owned refiners are squeezed, which eventually may encourage them to slow rather than increase supplies.
"China still has some subsidies around oil and petrol prices relative to other countries," said Ben Westmore, commodities analyst at the National Australia Bank, adding that it remained to be seen if the price hikes would hurt demand.
"It really comes down to margins more than the actual end price for oil. If the price of imports mean more expensive crude, then it's more likely that they are not going to put it through the refineries."
In contrast, South Korea, the world's fifth largest crude oil importer, has put pressure on refiners to cut retail oil prices as part of its battle against inflation. [
]Uncertainty in the oil market and concern that the rally may have run its course has thinned recent trade volumes. Volatility has subsided after surging in early March, Reuters data showed.
"There's risk on the upside and downside. It's probably caused a lot of market participants to wait-and-see," Westmore said. (Editing by Ed Lane)