单词 | blue vitriol |
释义 | blue vitriol Chem., Mineral. a salt, copper sulfate, CuSO4·5H2O, occurring naturally as large transparent, deep-blue triclinic crystals, appearing in its anhydrous state as a white powder: used chiefly as a mordant, insecticide, fungicide, and in engraving. Also called blue copperas, chalcanthite, cupric sulfate. [1760-70] |
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