Fine Gael's Jim Higgins has requested a special meeting of the Public Enterprise committee to discuss the sale of the Irish National Petroleum Company.
The sale was agreed at today's cabinet meeting in Killarney.
Mr Higgins requested that the Minister for Public Enterprise, her officials and the INPC should attend.
"We have to be satisfied that the deal is right for the economy, the consumer and the workers.
"Fine Gael is also concerned that while Tosco is paying $US 100m, a substantial portion of this may be wiped out because the State has agreed to take on the outstanding debt in the event of the INPC being unable to discharge its liabilities.
"We must know the exact amount of these outstanding liabilities," he said.