Copper for delivery in April was trading Rs 3.35, or 1.03 per cent down, at Rs 321.75 per kg, in a business volume of 1,575 lots at the Multi Commodity Exchange.
Likewise, the metal for delivery in far-month June traded lower at Rs 3.15, or 0.96 per cent, to Rs 326.20 per kg in 20 lots.
Analysts said the fall was largely in tune with a weak trend in metal at the London Metal Exchange (LME) after a key gauge of factory activity in China showed deteriorated conditions for a record seventh month, underscoring concerns about the outlook for demand in the world's biggest consumer.
Besides, low demand from domestic industries too had a negative impact, they said.
Meanwhile, copper for delivery in three months retreated 1.3 per cent to USD 4,645 per tonne at the LME.