The accident occurred early Monday morning. Police are diverting traffic around the accident site and there is no indication as to when the highway will reopen.
Around 1,000 litres of 50% hydrogen peroxide has leaked from the vehicle. Its total cargo is estimated at 28,000 litres. Firefighters have been diluting the spilled chemical and local residents have been asked to stay indoors.
The driver of the overturned vehicle is suspected of drunken driving.