A stockholder for the Chemours Co. alleged in a federal complaint Monday the company has misrepresented an estimated $2.46 billion in environmental liabilities since it was created.

The 91-page complaint, filed in the District of Delaware, alleges the liabilities' magnitude means Chemours' directors and officers have known the company was insolvent since it was spun off from DuPont in 2015, making that spinoff illegal under Delaware law.