Rasopanişad is a large Sanskrit work on alchemy written in the medieval period by an unknown author. Two available manuscripts of the original Sanskrit work, one incomplete copy in the library of Thirunakkara Swamiyar Matom in Kottayam and the other worn out but a complete manuscript in the possession of Vayaskara Narayanan Moossu of Kottayam, was edited by K Sambasivasastri and the book was printed by the Superintendent, Government Press, Trivandrum in 1928. The original Sanskrit text is translated into English with a scientific explanation by Dr. Vijaya Jayant Deshpande for the first time.