But he got into a row with a group of men on the VIP dance floor at Mangle E8 in Dalston, east London around 1am on April 17.
Sydney model Isobella Fraser, 22 and her sister Prue, were both sprayed with the "noxious substance" and feared they had been caught up in a terror attack when their skin started to burn.
Despite previously denying five counts of grievous bodily harm (GBH) with intent, and nine counts of actual bodily harm (ABH) against 14 people, Arthur was convicted at Wood Green Crown Court on Monday.
Collins admitted to throwing the liquid, but claims that he thought it was a date rape drug he had grabbed from two other men who planned to spike a woman's drink - he says he had no idea it was acid.
His co-defendant, Andre Phoenix, was also accused of helping him during the attack but was found not guilty. Their baby girl, Sunday, was born on November 2.
A week before, on April 10, Collins sent an iMessage to his sister Chenade Rowe saying: 'Tell mum to mind that little hand wash in my vehicle acid'.
In court he claimed he was referring to his hair-thickening shampoo, but this was dismissed by the jury. She said she plans to bring up her daughter as a single parent. George Carter-Stephenson QC, defending Collins, asked: "How good are you at misleading her?"
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"Yes she can", Collins replied. The footage shows him cowering behind another man as he throws the corrosive substance across the club.
One victim of the attack was 21-year-old Sophie Hall, who told The Mirror: "It smelt like petrol and it hit me and was the most terrible burning and stinging sensation".
"It was the happiest I have ever felt".
Lily Saw, reviewing lawyer for the London Crown Prosecution Service, said: "Our prosecution proved this acid attack was no accident".
The substance was later found to have a rating of pH1 - indicating a strong acid.
Of the 22 injured, 16 suffered serious burns. "There is understandable concern about this issue, and these convictions show that those who choose to use acid as a weapon can expect to face very serious criminal charges".
Arthur is due to be sentenced on December 19.