Tianjin's deadly blasts - by numbers

Authorities in the Chinese city of Tianjin have finally identified what chemicals were being stored inside the warehouse yard operated by Ruihai International Logistics, which was the scene of the deadly explosions that killed at least 145 people.

They also said they had cleared out 150 tonnes of the highly toxic sodium cyanide, found in the central area of the blast zone, and sent it back to the manufacturers for recycling.

Chemical experts had finished scouring an area within a 3km radius of the epicentre of the blasts and had found 100kg worth of hazardous chemicals, He Shushan, Tianjin’s deputy mayor, said at a press conference on Wednesday.

Most of the chemicals have been safely stored in a  temporary enclosure built to prevent any further leakage of chemicals.

He said the remaining 150 tonnes of sodium cyanide that had been recovered had been transported back to manufacturers.