[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D.](https://indike.org/pramana/ins.science.ray-1902) › v1.c11.t3 # A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c11.t3: Black Sulphide of Mercury (Kajjali) A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c11.t3 - **Language:** English ### Black Sulphide of Mercury (Kajjali) ### [v1.c11.t3.1](https://indike.org/pramana/ins.science.ray-1902.v1.c11.t3.1) or \*Æthiops Mineral\* ### [v1.c11.t3.2](https://indike.org/pramana/ins.science.ray-1902.v1.c11.t3.2) The first process consists in the purification of mercury. ### [v1.c11.t3.3](https://indike.org/pramana/ins.science.ray-1902.v1.c11.t3.3) “Quicksilver, rubbed repeatedly in the juice expressed from \*sesbania aculeata\*, \*ricinus communis\*, \*zingiber\* and \*solanum nigrum\*, becomes purified.” ### [v1.c11.t3.4](https://indike.org/pramana/ins.science.ray-1902.v1.c11.t3.4) “Take one part of mercury and one part of sulphur, rub the two together in a mortar and thus prepare \*kajjali\* or \*rasarpati\*.¹” ### [v1.c11.t3.5](https://indike.org/pramana/ins.science.ray-1902.v1.c11.t3.5) ¹ Chakrapáni himself claims its discovery or at any rate its introduction : रसपर्पटिका ख्याता निवद्धा चक्रपाणिना । Vrinda, however, recommends its use as well. --- Source: [https://indike.org/pramana/ins.science.ray-1902.v1.c11.t3](https://indike.org/pramana/ins.science.ray-1902.v1.c11.t3) · Pramāṇa