* Trading seen volatile, demand outlook weakens
* Weaker dollar to give no lasting boost to commodities
* China growth still seen supporting commodities
By Manolo Serapio Jr and Dmitry Zhdannikov
SINGAPORE Aug 7 (Reuters) - Commodities, except gold, will likely fall when markets open on Monday due to a U.S. ratings downgrade and a worsening debt crisis in Europe but panic shall be avoided.
Bullion should benefit from renewed risk-aversion while outlook for demand for oil, base metals and grains deteriorates.
Strong economic growth in China -- the world's top copper consumer, No. 2 oil user and major buyer of grains -- as well as tight global supplies for some raw materials including coal and iron ore, will provide certain support and some investors may see weakness as a buying opportunity.
"It should be an orderly decline, nothing to panic about. The important thing now is that confidence doesn't slip too far," said Citigroup analyst David Thurtell.
Standard & Poor's cut the long-term U.S. credit rating to AA-plus on Friday, a move that over time could ripple through markets by pushing up borrowing costs and making it more difficult to secure a lasting recovery.
- Sumber , kitco.com