(Reuters) -- South Korea's S-Oil sold 33 KT of light naphtha for Sept. 15-27 loading from Onsan to a Japanese trader at premiums of around USD 3.50 a tonne to Japan quotes on a free-on-board (FOB) basis, traders said on Thursday.
This was in sharp contrast to a discount of USD 2.50 a tonne it had previously secured for similar volumes lifting Aug. 21-31.
Naphtha sentiment has firmed due to tighter supplies caused by healthy demand but limited European cargoes arriving.
Cracks, the premiums/losses obtained from refining Brent crude into naphtha, were at a 3-1/2 month high on Thursday at USD 129.25 a tonne premium.