NSW Fire and Rescue, which is managing the incident, called in a team of hazardous material (HAZMAT) removal specialists to clean up the leak which was detected at 9am on Monday when a security guard arrived for work and found the factory's alarm system activated.

The HAZMAT team was expected to work throughout last night to clean up the mess, however it was still unclear whether their work would be completed in time for the factory to reopen on Wednesday. 

According to Electrolux's corporate communications spokesman Craig McCarthy the flammable liquid, which contains pentane, had leaked from the factory's cabinet foaming area.

Mr McCarthy said early estimates suggest around 1000 litres of chemicals had spilled.

"It looks like it had been going for some time," Mr McCarthy said.

Mr McCarthy said Electrolux management would attempt to contact workers yesterday although some would not learn of the closure until they presented for work today.

Mr McCarthy said no one was injured as a result of the spill as no-one had been on-site since Friday evening.

"We're thankful that none of the chemicals have gone down any drains and all of it has been contained in the area," he said.

"The HAZMAT team has been tremendous."

Canobolas Local Area Command duty officer Peter Atkins said there were around 30 emergency services workers on site yesterday, included a small number of police.

"It was fortunate the facility was cleared at the time of the incident and it was contained to one area of the facility," inspector Atkins said.