Magnesium hydroxide
Encyclopedia : M : MA : MAG : Magnesium hydroxide
|
General
|
|
|---|---|
| Name | Magnesium hydroxide |
| Chemical formula | Mg(OH)2 |
| Molar mass | 58.33 g/mol |
| Appearance | White solid |
|
Physical
|
|
| Melting point | Decomposes at 623 K (350 °C) |
| Density | 2.4 g/cm³ |
| Crystal structure | ? |
| Solubility | 0.0012 g in 100 g water |
|
Thermochemistry
|
|
| ΔfH0gas | -561 kJ/mol |
| ΔfH0solid | -925 kJ/mol |
| S0solid | 63 J/(mol·K) |
|
Safety
| |
| Ingestion | Safe in small amounts, but large amounts can be dangerous. |
| Inhalation | May cause irritation. |
| Skin | May cause irritation. |
| Eyes | May cause irritation. |
| More info | [Hazardous Chemical Database] |
|
SI units were used where possible. Unless otherwise stated, standard conditions were used.
Disclaimer and references | |
Magnesium hydroxide, Mg(OH)2, otherwise known as milk of magnesia, is commonly used as an antacid or a laxative. The mineral form of magnesium hydroxide is known as brucite. Magnesium hydroxide interferes with the absorption of folic acid and iron. The diarrhea caused by magnesium hydroxide carries away much of the body's supply of potassium, and failure to take extra potassium will lead to muscle cramps.
It has very low solubility in water, and has a Ksp value of 1.5e-11.
It is a weak base.
Preparation
[Mg_3N_2 + 6H_2O \rightarrow 2NH_3 + 3Mg(OH)_2][MgO + H_2O \rightarrow Mg(OH)_2]
External links
- For a full list of external links to MSDSs, spectroscopic data, commercial chemicals suppliers etc. for this compound, see [Chemical sources].
From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating.
All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details.