blue vitriol


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Related to blue vitriol: borax, Epsom salt

blue vitriol,

the pentahydrate of cupric sulfatecupric sulfate
or copper (II) sulfate,
chemical compound, CuSO4, taking the form of white rhombohedral crystals or amorphous powder. It decomposes at 650°C; to cupric oxide (CuO).
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blue vitriol

[′blü ′vit·rē‚ȯl]
(materials)
A hydrous solution of copper sulfate that is applied to the surface of a metal for layout purposes.
(mineralogy)