Acid used to help whiten teeth spills across the M11

The M11 motorway has fully reopened between junction 5 and junction 6 in Essex after a tanker overturned and spilled a large amount of acid across both carriageways.

The spilled chemicals were identified as phosphoric acid and melamine formaldehyde resin. The fire service said he was "not aware" of any danger to the public.

Phosphoric acid is commonly used in fertilisers, food additives and home cleaning products, as well as in medicine and dentistry to help whiten teeth.