Magnesium Oxide

Magnesium oxide (MgO), or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium (see also oxide). It has an empirical formula of MgO and consists of a lattice of Mg2+ ions and O2− ions held together by ionic bonds. Magnesium hydroxide forms in the presence of water (MgO + H2O → Mg(OH)2), but it can be reversed by heating it to separate moisture.

Magnesium oxide was historically known as magnesia alba (literally, the white mineral from Magnesia), to differentiate it from magnesia negra, a black mineral containing what is now known as manganese.

Read more about Magnesium OxideProduction, Applications, Precautions

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Magnesium Oxide - Precautions
... Magnesium oxide is easily made by burning magnesium ribbon which oxidizes in a bright white light, resulting in a powder ... Inhalation of magnesium oxide fumes can cause metal fume fever ...
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... "Boiled linseed oil" contains Lead Oxide (boiled with PbO), which speeds hardening (oxidizing) on contact with oxygen ... magnesium Mg Fire starter Sold in solid blocks as a fire starter in many camping and outdoor stores ... magnesium carbonate MgCO3 Athlete's chalk Often sold as a powder in sporting goods stores for gymnastics, weightlifting, and climbing to help keep hands dry ...
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... zone) Silicon and magnesia react to produce silica and magnesium ... of the products, namely distilling out the magnesium vapor ... The atmospheric pressure boiling point of magnesium metal is very low, only 1090 °C, and even lower in vacuum ...
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... The magnesium oxide insulation is hygroscopic so MICC cable must be protected from moisture until it has been terminated ... a termination is faulty due to workmanship or damage then the magnesium oxide will absorb moisture and lose its insulating properties ... Moisture absorption The magnesium oxide insultion has a high affinity for moisture ...
Magnesium Oxide Wallboard
... Magnesium oxide more commonly called magnesia is a versatile mineral that when used as part of a cement mixture and cast into thin cement panels under ... and resistance due to very strong bonds between magnesium and oxygen atoms that form the magnesium oxide molecules (chemical symbol MgO) ...