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Magnesium oxide:Electric properties,Refractory insulator,Uses

Apr 12,2024

Magnesium oxide is a hygroscopic fine white powder, that reacts violently with strong acids. 

Magnesium oxide

Crystal structure

Magnesium oxide has a cubic structure.

Electric properties

Pure magnesium oxide is not conductive and has a high resistance to electric current at room temperature. The pure powder of MgO has a relative permittivity of between 3.2 to 9.9 k with an approximate dielectric loss of tan(δ) > 2.16x103 at 1kHz.

Refractory insulator

Magnesium oxide is prized as a refractory material, i.e. a solid that is physically and chemically stable at high temperatures. It has the useful attributes of high thermal conductivity and low electrical conductivity.

MgO is used as a refractory material for crucibles. It is also used as an insulator in heat-resistant electrical cables.

Uses

Magnesium oxide is used for the relief of heartburn and indigestion, as an antacid, magnesium supplement, and as a short-term laxative. It is also used to improve symptoms of indigestion.

Side Effects

Side effects of magnesium oxide may include nausea and cramping. In quantities sufficient to obtain a laxative effect, side effects of long-term use may rarely cause enteroliths to form, resulting in bowel obstruction.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, or trouble breathing.

Personal protection

particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting.

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Magnesium oxide

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