Management at BASF in Paisley, Renfrewshire, announced cuts yesterday, the day after telling staff its site is to close with the loss of more than 140 jobs.
Workers at the town's longest running manufacturing plant were given the news at a meeting on Tuesday. It was formally confirmed by the company yesterday.
Meanwhile, a fridge repair and serving firm has gone into administration, threatening 59 jobs in East Kilbride, South Lanarkshire.
WR Refrigeration, which has sites throughout the UK, had been suffering cash-flow and trading problems. It had also been issued with a winding up petition by the HM Revenue and Customs. BASF and Ineos are linked via a separate joint venture.
The two operations set up a 50-50 joint venture called Styrolution in 2011. It is based in Frankfurt and employs 3200 people worldwide.
BASF said the timing of both announcements was "pure coincidence".
The closure at Paisley comes after years of cutbacks at the site, which has been operating under a range of owners for more than 60 years. In 2008, more than 566 people worked at the plant; now the remaining 141 workers will see their jobs go when it closes by the end of 2015.
Finance Secretary John Swinney said: "The announcement today will be a major concern for BASF employees and their families and our thoughts go out to them." He said the government and its agencies would be meeting the company to discuss options for the site. It has also offered support to BASF through an initiative that aims to respond to redundancy situations.
Local SNP MSP, George Adam, said: "This is disappointing news, this site has a history that goes back over half a century."
Renfrewshire Council's leader Mark Macmillan visited the plant yesterday and met company representatives.
Councillor Macmillan said: "Renfrewshire Council will provide all the assistance we can to secure continued employment at the site through another buyer or an alternative use."