History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c23.5
History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c23.5
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- English
c23.5
*Saurashtri* or *tuvari* (alum-earth) :—Found in Surat; when applied to white clothes it serves as a mordant for dyes. A variety of it is slightly yellow and is called *phullika*. Another variety is white and acid in taste; this can kill iron. Alum is astringent, acid, beneficial to the eye; it can remove pimples and kill mercury * * * The essence extracted from the alums (i.e. oil of vitriol) is to be used for operations with metals and not as medicine.