US stocks of propylene for non-fuel use in the week that ended October 6 shed 272,000 barrels to 3.036 million barrels, Energy Information Administration data showed Thursday.
Current inventory levels are 261,000 barrels higher than at the same point a year ago, according to the data.
US refinery run rates rose 1.1 percentage points to 89.2% last week, the EIA data showed.
The utilization rate was 3.7 percentage points higher than in the year-ago week, the EIA data showed.
In the spot market, US polymer-grade propylene for the prompt month was assessed 1 cent lower Thursday at 45.25-45.75 cents/lb FD USG for prompt-month (October) deliveries.
US spot refinery-grade propylene was stable at 34.25-34.75 cents/lb FD USG on a three- to 30-day basis.
