My Brother Had Injested Phenyl On 28th Dec. At 3

My brother had injested phenyl on 28th Dec. At 3 pm and we come to know at 4 pm then rushed to hospital and till now he is in hospital and had breathing problem pulse rate 76 w/o oxygen and had chest and stomach pain and doctors said that lungs has been effected and reaction increased. Let me suggest how would he recover and chances of recovery.