Emergency workers were called to the Morisset station, near Sydney, around 11 a.m., after track workers noticed chemical leaking out of a private freight train, an official told the Australian Associated Press.
The tanker was leaking sodium hypochlorite -- a chemical used for cleaning -- at the rate of about five litres per minute.
The spill did not pose a risk to nearby residents as there was no chemical vapour cloud, the official said.
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