What is FeSO 4??? Share with your friends Share 0 Snehal answered this Acid -1 View Full Answer Sayooj Sankar answered this Ferrous sulphate or iron sulphate is the word name of FeSO4 . It is odourless and mildly acidic in nature. 0 Sathya Mitiran answered this Ferrous sulphate or iron sulphate is the word name of FeSO4 . It is odourless and mildly acidic in nature. 3