Castor oil in the non-edible section, also eased on reduced offtake by consuming industries.
Traders said subdued demand from retailers against adequate stocks position mainly led to the decline in mustard and palmolein oil prices.
In the national capital, mustard expeller (Dadri) oil fell by Rs 50 to Rs 7,650 per quintal.
Palmolein (rbd) and palmolein (Kandla) oils also softened by Rs 50 each to Rs 5,300 and Rs 5,350 per quintal, respectively.
In the non-edible section, castor oil too traded lower by Rs 50 to Rs 8,900-9,000 per quintal.
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Oilseeds: Mustard seed Rs 2,950-3,050 and Groundnut seed Rs 2,150-2,900. Vanaspati Ghee (15-litre tin) Rs 800-1,000.
Edible oils: Groundnut Mill Delivery (Gujarat) Rs 8,500, Groundnut Solvent Refined (per tin) Rs 1,550-1,650, Mustard expeller (Dadri) Rs 7,650, Mustard Pakki Ghani (per tin) Rs 1,250-1,295, Mustard Kachi Ghani (per tin) Rs 1,300-1,400, Sesame Mill delivery Rs 7,800, Soybean Refined Mill Delivery (Indore) Rs 6,650, Soybean Degum (Kandla) Rs 6,250, Crude Palm Oil (Ex-Kandla) Rs 4,750, Cottonseed Mill Delivery (Haryana) Rs 6,350, Palmolein (RBD) Rs 5,300, Palmolein (Kandla) Rs 5,350 and Coconut (per tin) Rs 2,050-2,100.