Zinc hydroxide
Zinc hydroxide Zn(OH)2 is an inorganic chemical compound. It also occurs naturally as 3 rare minerals: wülfingite (orthorhombic), ashoverite and sweetite (both tetragonal).
| Names | |
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| IUPAC name
Zinc hydroxide | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.039.816 |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| Zn(OH)2 | |
| Molar mass | 99.424 g/mol |
| Appearance | white powder |
| Density | 3.053 g/cm3, solid |
| Melting point | 125 °C (257 °F; 398 K) (decomposition) |
| slightly soluble | |
Solubility product (Ksp) |
3.0×10−17 |
| Solubility in alcohol | insoluble |
| −67.0·10−6 cm3/mol | |
| Thermochemistry | |
Std enthalpy of formation (ΔfH⦵298) |
−642 kJ·mol−1 |
| Hazards | |
| Flash point | Non-flammable |
| Related compounds | |
Other anions |
Zinc oxide |
Other cations |
Cadmium hydroxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Like the hydroxides of other metals, such as lead, aluminium, beryllium, tin and chromium, Zinc hydroxide (and Zinc oxide), is amphoteric. Thus it will dissolve readily in a dilute solution of a strong acid, such as HCl, and also in a solution of an alkali such as sodium hydroxide.
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