![]() ![]() In Ancient India, saltpeter manufacturers formed the Nuniya caste. See also: Nitre § Availability From mineral sources It was called "Chinese salt" by the Iranians/Persians or "salt from Chinese salt marshes" ( Persian: نمک شوره چينی namak shūra chīnī). The Arabs called it "Chinese snow" ( Arabic: ثلج الصين thalj al-ṣīn). By the 15th century, Europeans referred to it as saltpetre, specifically Indian saltpetre (sodium nitrate is chile saltpetre) and later as nitrate of potash, as the chemistry of the compound was more fully understood. Thence Old French had niter and Middle English nitre. Hebrew and Egyptian words for it had the consonants n-t-r, indicating likely cognation in the Greek nitron, which was Latinised to nitrum or nitrium. Potassium nitrate, because of its early and global use and production, has many names. ![]()
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