Nickel has soared to new heights on the back of fears that US sanctions on Russian companies will expand to include the metal. SEE MORE The European ethylene market looks stable as the recent length has cleared following a spate of exports to Asia. SEE MORE US aromatics prices rose on the week amid talk of an unplanned production issue at Shell's Deer Park, Texas, facility. Details and confirmation surrounding the outage were not available at time of publication. Prompt spot toluene prices rose roughly 6 cents week on week SEE MORE The Asian toluene-benzene spread has recently been pressured to multi-month lows on the account of rising energy complex buoying feedstock costs and a weak benzene market, according to market sources. SEE MORE The dollar rallied at the start of a week packed with catalysts, from economic data to new debt supply, as the yield on benchmark U.S. Treasuries threatened to climb above 3 percent. Equities in the U.S. fluctuated. SEE MORE