The chemical formula of Plaster of Paris is HomeAcids Bases and Salts MCQsThe chemical formula of Plaster of Paris is Share your love WhatsApp Facebook Telegram Twitter Pinterest Q. The chemical formula of Plaster of Paris is CaSO4.2H2OCuSO4.5H2OCaSO4.1/2H2OAll of the above Answer: CaSO4.1/2H2O