Police and fire services attended the scene at 8.40am today, Tuesday, May 3, after hydrochloric acid was spilt on the road.
Fire crews from Buckingham and West Ashland attended.
Three plastic 5L canisters, emitting vapour, were found in the road.
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The road was closed while the firefighters worked to identify the substance they contained, which was confirmed as 14 per cent hydrochloric acid.
The road was closed for professional cleaning to take place.