Snaresbrook Crown Court heard how emergency services were called to Burges Road, East Ham where a man was suffering from burn injuries to his face, arms and torso. When they arrived, members of the public were dousing him with water.
Medics described it as “a devastating chemical injury” for which the resulting treatment was a variety of procedures including skin grafts and the reconstruction of his eyelid.

Mohammed, 28, was sentenced on Thursday, August 15 and must serve a minimum of 15 years with the remainder on license.
He had previously been found guilty of throwing a noxious substance with intent to maim, disfigure or cause grievous bodily harm and grievous bodily harm with intent.
Another man was jailed last year for his part in the attack, with a third being charged with offences but dying before the case came to trial.
Detective Constable Faye Cook said: “This was a horrific incident which left the victim with serious injuries. This sentencing is the culmination of a lengthy process which has been very trying for him.”