Meanwhile, FOB Korea toluene was assessed at $1,058.50/mt Tuesday, stable from Monday amid ample supply.
Based on latest prices, the premium for FOB US Gulf premium compared with FOB Korea is $81.50/mt, up 81% from Monday.
Freight for 10,000 mt of toluene from South Korea to the US Gulf Coast was assessed at $66-70/mt Tuesday, stable from Monday.
Deducting a $70/mt freight from the spread leaves a margin of $11.50/mt.
Early Tuesday, however, the FOB Korea toluene marker rose $10.50/mt to be pegged at $1,069/mt.
A trader said that the likelihood of arbitrage could have resulted in fewer sellers in the market, tightening supply and supporting prices.