The fire at the Seeo company was reported about 3:30 p.m., said Hayward fire Capt. Thor Poulsen. About 25 employees were evacuated from the facility in the 3900 block of Trust Way, at Eden Landing Road, he said. Investigators found a plastic bucket of hexane burning in a laboratory, said Poulsen, who described the chemical as an alcohol-type liquid fuel. The fire was contained in about 25 minutes, he said.