Gunaratna, T.A.N.R.; de Silva, Rohini M.; Prajapati, P.K.; de Silva, K.M. Nalin
(University of Colombo, 2020)
The black colour compound prepared manually by grinding purified mercury and purified
sulphur is known as kajjali in Ayurveda rasashastra. This insoluble inorganic compound is
known as β-HgS in chemistry. Although kajjali ...