Copper(I) hydroxide
| Names | |
|---|---|
| Other names
Cuprous hydroxide; Copper monohydroxide
| |
| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
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| Properties | |
| CuOH | |
| Molar mass | 80.55 g/mol |
| Hazards | |
| US health exposure limits (NIOSH): | |
PEL (Permissible)
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TWA 1 mg/m3 (as Cu)[1] |
REL (Recommended)
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TWA 1 mg/m3 (as Cu)[1] |
IDLH (Immediate danger)
|
TWA 100 mg/m3 (as Cu)[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Copper(I) hydroxide is the hydroxide of the metal copper with the chemical formula of CuOH. It is a mild, highly unstable alkali. The color of pure CuOH is yellow or orange-yellow,[2] but it usually appears rather dark red because of impurities. It is extremely easily oxidized even at room temperature.
Preparation[edit]
Copper(I) hydroxide can be prepared according to the following reaction:
In this reaction, ethanol serves as a catalyst. It can also be a solvent for the byproduct sulfur and thus get rid of it.
Another method is by the double decomposition of CuCl and NaOH:
Notably, this method is rarely used because the CuOH produced will gradually dehydrate and eventually turn into Cu2O.
Reactions[edit]
Similar to iron(II) hydroxide , copper(I) hydroxide can easily oxidise into copper(II) hydroxide:
References[edit]
- ^ a b c "NIOSH Pocket Guide to Chemical Hazards #0150". National Institute for Occupational Safety and Health (NIOSH).
- ^ Soroka, Inna L.; Shchukarev, Andrey; Jonsson, Mats; Tarakina, Nadezda V.; Korzhavyi, Pavel A. (2013). "Cuprous hydroxide in a solid form: does it exist?". Dalton Transactions. 42 (26): 9585. doi:10.1039/C3DT50351H.
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