Cobalt Sulphate

Description

Copper(II) sulfate, (Copper Sulphate) the chemical compound with the formula CuSO4, is a common salt of copper. Copper sulfate (Copper Sulphate) exists as a series of compounds that differ in their degree of hydration. The anhydrous form is a pale green or gray-white powder, while the hydrated form is bright blue. The archaic name for copper(II) sulfate is blue vitriol.
Applications
It can be used to plate metals with copper, as a fungicide or herbicide, or as a chemical test for water (the anhydrous form will absorb water, turning blue). Mixed with lime it is called Bordeaux mixture. It is also used, in Fehling's solution, to test for reducing sugars, which reduce the blue Cu2+aq ions to red copper(I) oxide. Still other uses include hair dyes and the processing of leather and textiles.
Copper sulfate (Copper Sulphate) is also used to test blood for anemia. A drop of the patient's blood is dropped into a container of copper sulfate, if it sinks within a certain time, then the patient has sufficient haemogloblin levels and is not anemic. If the blood floats or sinks too slowly, then the patient is iron-deficient and may be anemic.
In a flame test, copper ions emit a deep blue-green light, much more blue than the flame test for barium.
Copper(II) sulfate is a desiccant.
When heated in an open flame the crystals are dehydrated and turn grayish-white.
Copper sulfate (Copper Sulphate) is a commonly included chemical in children's chemistry sets and is often used in high school crystal growing and copper plating experiments.

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