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alum(astringent salt, usually occurring in the form of pale crystals, much used in the dyeing and tanning trade and in certain medicines, and now understood to be a double sulphate of potassium and aluminium (K2SO4·Al2(SO4)3·24H2O))
używać ałunu ― to use alum
(inorganic chemistry)alum(any similar double sulphate in which either or both of the potassium and aluminium is wholly or partly replaced by other univalent or tervalent cations)
Maria Renata Mayenowa, Stanisław Rospond, Witold Taszycki, Stefan Hrabec, Władysław Kuraszkiewicz (2010-2023) “hałun”, in Słownik Polszczyzny XVI Wieku [A Dictionary of 16th Century Polish]
“HAŁUN”, in Elektroniczny Słownik Języka Polskiego XVII i XVIII Wieku [Electronic Dictionary of the Polish Language of the XVII and XVIII Century], 2016 November 4