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Definition of copper sulphate in English: copper sulphate(also copper sulfate) noun mass nounA blue crystalline solid used in electroplating and as a fungicide. Chemical formula: CuSO₄.5H₂O Example sentencesExamples - When organic farmers do use one of the chemicals they are allowed to use, such as sulphuric acid or copper sulphate, they do so on a pretty substantial scale, to the serious detriment of neighbouring wildlife.
- Classifying the colours individually, the note says the black paste contains lead oxide, green has copper sulphate and the red has mercury sulphite.
- In the United States, it was common to color pickles and canned vegetables with copper sulfate until about 1905.
- Apart from the blue crystals of copper sulphate that would appear to spray the potatoes against blight, chemicals belonged to another world.
- The earthworms reacted differently to different chemicals, avoiding soil with the sulphuric acid and copper sulphate with no reaction to potassium nitrate.
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