Copper(I) sulphate; Cuprous sulfate; Dicopper sulfate
3D model (JSmol)
|Molar mass||223.15 g mol−1|
|Density||4.12 g cm−3|
|Melting point||110 °C|
a = 4.748(3) Å, b = 13.96(1) Å, c = 10.86(1) Å
Formula units (Z)
|NIOSH (US health exposure limits):|
|TWA 1 mg/m3 (as Cu)|
|TWA 1 mg/m3 (as Cu)|
IDLH (Immediate danger)
|TWA 100 mg/m3 (as Cu)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Copper(I) sulfate, also known as cuprous sulfate, is the inorganic compound with the chemical formula Cu2SO4. It is a white solid that has attracted little attention, in contrast to copper(II) sulfate. It is an unusual example of a copper(I) compound derived from an oxyanion, illustrated also by the non- or fleeting existence of cuprous nitrate and cuprous perchlorate.
Cu2SO4 crystallizes in the orthorhombic space group Fddd. Each oxygen in a sulfate anion is bridged to another sulfate by a copper atom, and the Cu-O distances are 196 pm. The structure is intermediate between silver sulfate and solid sulfuric acid.
The small amount of water produced in this reaction is absorbed by the sulfuric acid.
The material is stable in dry air at room temperature but decomposes rapidly in presence of moisture or on heating. It disproportionates upon contact with water:
It can also be produced by the reaction of copper(II) sulfate and a reducing agent such as sodium thiosulfate.
Cu2SO4 crystallizes in the orthorhombic space group. The Cu-O distances are 196 pm.
- Berthold, H. J.; Born, J.; Wartchow, R. (1988). "The crystal structure of copper(I)sulfate Cu2SO4 – The first structure of a simple cuprous oxo-salt". Z. Kristallogr. Cryst. Mater. 183: 309–318. doi:10.1524/zkri.19184.108.40.2069.
- NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH). https://www.cdc.gov/niosh/npg/npgd0150.html.
- O. Glemser; R. Sauer (1963). "Copper (I) Sulfate". in G. Brauer. Handbook of Preparative Inorganic Chemistry, 2nd Ed.. 2pages=1020. NY,NY: Academic Press.
- Vo Van, Kim; Habashi, Faith (1972). "Identification and Thermal Stability of Copper(I) Sulfate". Can. J. Chem. 50 (23): 3872–3875. doi:10.1139/v72-610.
Original source: https://en.wikipedia.org/wiki/ Copper(I) sulfate. Read more