The Quebec man convicted of splashing a corrosive substance on his now ex-girlfriend has been sentenced to 57 months in prison minus time served.

Nikolas Stefanatos, of Brossard, has already served 41 months because time served before sentencing is equivalent to time and a half, meaning he will spend another 16 months in prison, for the 2012 attack on Tanya St-Arnauld.

Nikolas Stefanatos, 27, has been sentenced to 57 months in prison, less time served, for the 2012 acid attack on his onetime girlfriend. (Facebook)

Stefanatos pleaded guilty to aggravated assault in November after he sprayed the acid on 29-year-old St-Arnauld during an argument.

She suffered burns to a fifth of her body and spent several days in an induced coma. After she was revived, she had the mobility "of an infant."

The paint on the apartment wall near the scene of the fight bubbled and peeled off from being sprayed with the product that Stefanatos sprayed on St-Arnauld.

Stefanatos stared at the floor while the judge read her decision. After he's released, he will face three years of probation under strict conditions.

Tanya St-Arnauld, 29, had laser treatments in Miami in an attempt to help the scars she was left with after the acid attack. (Photo courtesy of Tanya St Arnauld)

St-Arnauld 'not surprised' by sentence

St-Arnauld was in the courtroom and later told reporters she was not surprised by the sentence.

She said 16 months is not a lot of time, but she accepts the decision.

It was the same sentence the Crown and defence had suggested to the judge on Dec. 3.

St-Arnauld has given birth to a boy since the attack, and said that one day, she'll have to explain why her skin is disfigured.

However, she said she's happy this part of the process is over, and looks forward to getting on with the rest of her life.