* C$ softens to C$0.9642, or $1.0371
* Bond prices firmer across curve (Updates details, adds comments)
TORONTO, April 18 (Reuters) - The Canadian dollar edged lower against the greenback on Monday as a flurry of uncertainty, including Standard & Poor's downward revision of its U.S. outlook, sent investors scurrying for safety.
Standard & Poor's maintained its top AAA rating for the United States, but revised the country's credit outlook, saying officials have not clarified how the country's long-term fiscal pressures will be handled. [ID:nN18195555]
"That's attracting risk-off activity into the marketplace. Ironically, but unsurprisingly, a bit to the U.S. dollar itself," said Jack Spitz, managing director of foreign exchange at National Bank Financial.
"The market is still comfortable in buying the U.S. dollar, but not as a result of stronger U.S. fundamentals. It's an entirely risk-off, safe-haven environment ... that's happening across the board as equities melt away and commodities are being sold off, with the exception of gold."
The Canadian dollar was also buffeted by retreating crude prices and worries over euro debt and the possibility of a slowdown in the Chinese economy.
The currencyfinished the session at C$0.9642 to the U.S. dollar, or $1.0371, down from Friday's finish of C$0.9601 to the U.S. dollar, or $1.0416.
China's move to increase banks' reserve requirements -- the seventh such tightening since October -- signaled Beijing's determination to stamp out inflation. [ID:nL3E7FG019]
"On China, timing's always a bit of an issue, but nobody at all is surprised by the trend of tightening," said Mark Chandler, the head of Canadian fixed income and currency strategy at RBC Capital markets.
A Greek newspaper report saying the government wanted to start debt restructuring talks, even though a Greek government source denied the report added to the pressure on the market. [ID:n ATH006025] [ID:nN18216539]
The rise of a euro-skeptic party in Finnish elections was seen as an extra hurdle to solving the euro zone's debt problems.
Also weighing on Canada's resource-heavy currency was a slump in U.S. crude to below $108 a barrel. The slide came after a cut in output from the world's top exporter, Saudi Arabia, raised concern that high prices were hurting demand. [O/R]
International securities transactions in Canada for February came in weaker than expected and showed a surprisingly sharp reduction in the flow recently seen in Canadian bonds, Chandler said. [ID:nN18218776]
"At the margin, that was negative for the Canadian dollar, but to be fair, it was basically the U.S. move that drove everything," Chandler said.
The market will be looking ahead to March inflation figures on Tuesday, but with the Bank of Canada signaling earlier this month its intent to keep interest rates on hold, and its next rate decision not due until May, analysts do not expect the data to have much impact.
A shortened holiday week is also expected to keep trading thin. The market will be closed on Friday for the Easter holiday.
Canadian bond prices edged higher across the curve, outperforming the U.S Treasury. [US/]
"The belly of Canada's curve did quite well," Chandler said. "Not much in the way of Canadian data driving this, but at the longer end of the market, there's relative preference for Canada over the U.S."
The two-year bondwas up 7 Canadian cents to yield 1.707 percent, while the 10-year bond gained 42 Canadian cents to yield 3.252 percent. (Editing by Peter Galloway)
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