A Manchester woman who was charged with assault for dousing a woman with a corrosive substance, for allegedly having an affair with her husband, is set to be charged with murder.

Police say the victim, Roshane Griffiths, succumbed to her injuries last week after suffering third degree burns to approximately 75 per cent of her body following the gruesome acid attack in Asia, Manchester on July 19.

According to cops, the accused Camille Chambers-Collins is expected to be charged with murder if a post-mortem report indicates that Griffiths actually died as a result of injuries sustained from the attack.

It is alleged that Griffiths was attacked while she was sitting in a car with a man, who was believed to be the husband of Chambers-Collins, on July 20.

Both Griffiths and the man were reportedly injured during the attack and were rushed to hospital.