Just a FYI
from WIKI search on copper sulfate pentahydrate
Copper(II) sulfate
https://en.wikipedia.org/wiki/Copper(II)_sulfateIUPAC name
Copper(II) sulfate
Other names
Cupric sulphate
Blue vitriol (pentahydrate)
Bluestone (pentahydrate)
Bonattite (trihydrate mineral)
Boothite (heptahydrate mineral)
Chalcanthite (pentahydrate mineral)
Chalcocyanite (mineral) Copper Sulphate pentahydrate
Identifiers
CAS Number
7758-98-7 (anhydrous) check
7758-99-8 (pentahydrate) check
16448-28-5 (trihydrate) ☒
19086-18-1 (heptahydrate) ☒
Chemical formula
CuSO4 (anhydrous)
CuSO4·5H2O (pentahydrate)
Molar mass
159.60 g/mol (anhydrous)[1]
249.685 g/mol (pentahydrate)[1]
Appearance
gray-white (anhydrous)
blue (pentahydrate)
Density
3.60 g/cm3 (anhydrous)[1]
2.286 g/cm3 (pentahydrate)[1]
Melting point
110 °C (230 °F; 383 K) decomposes
560 °C decomposes[1](pentahydrate (·5H2O))
Fully decomposes at 590 °C (anhydrous)
Boiling point
decomposes to cupric oxide at 650 °C
Solubility in water
1.055 molal (10 °C)
1.26 molal (20 °C)
1.502 molal (30 °C)[2]
Solubility
anhydrous
insoluble in ethanol[1]
pentahydrate
soluble in methanol[1]
10.4 g/L (18 °C)
insoluble in ethanol
insoluble in acetone