[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray](https://indike.org/pramana/ins.science.ray-1956) › c20.s3.2 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c20.s3.2 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c20.s3.2 - **Language:** English ### [c20.s3.2](https://indike.org/pramana/ins.science.ray-1956.c20.s3.2) Sulphur, \*gairika\* ‘red ochre’, \*kāśīśi\* ‘red-clay earth’, \*khechara\* ‘mica’, \*añjana\* ‘sulphide of lead and antimony’, \*kānkushtha\* ‘a medical earth—possibly magnesium or sodium sulphate’;—these are the \*uparasas\* ‘subsidiary rasas’. - [Previous: c20.s3.1](https://indike.org/pramana/ins.science.ray-1956.c20.s3.1) - [Next: c20.s3.3](https://indike.org/pramana/ins.science.ray-1956.c20.s3.3) - [Up: c20.s3](https://indike.org/pramana/ins.science.ray-1956.c20.s3) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c20.s3.2](https://indike.org/pramana/ins.science.ray-1956.c20.s3.2) · Pramāṇa