History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c18.s4.t3.4

v1.c18.s4.t3.4

It is a compound of Mercury and Sulphur in Sulphide form. To prepare this purified Mercury and Sulphur are advised to be taken. For preparing ‘Rasa Parpaṭi’ these are first mixed and made into black powder form (Kajjali form) by trituration (Fig. 5), and then made into thin scally (Parpaṭa like) form by melting on slow fire and pressing in between Banana leaf.