Copper is down 2.2% to $2.8880 per pound.
This comes after news that Chinese property developer Zhejiang Xingrun Real Estate has collapsed. China's property sector accounts for about 40% of copper demand.
Copper prices have been falling recently.
Concerns about slowing Chinese growth and domestic bond defaults have weighed on copper. Coming on the back of this, copper-backed loans in China are also expected to unwind. Some 60-80% of China's copper imports have been used as collateral.
Here's a look at today's sell-off:
Fin VIz