Magnesium oxide: Properties, Shiri, aikace-aikace

Magnesium oxide ne sau da yawa ake magana a mafi kawai kone magnesia ko magnesium oxide. Wannan abu ne hur da lafiya crystalline fararen foda. A yanayi, da magnesium oxide auku a matsayin ma'adinai periclase. Masana'antun sarrafa kayayyakin abinci ne mai abu da aka sani da wani abinci ƙari karkashin code E530.

Properties na magnesium oxide

Chemical Formula na abu: MgO. Wannan fili yana da kusan babu wari a cikin ammonia da acid ne readily mai narkewa a cikin ruwa, ta solubility a 30 ° C ne kawai 0,0086 grams / 100 ml, da kuma wani barasa da shi ba ta soke. Matauni taro na MgO - 40,3044 g / mol. A 20 ° C da yawa ne 3,58 g / cm³, ruwan zafin jiki - 3600 ° C, dab - 2852 ° C. Melkokristallichesky magnesium oxide ne chemically quite aiki. Shi ne iya mamaye carbon dioxide da nunawa daidai carbonate:

• MgO + CO ₂ = MgCO _3;

albeit sannu a hankali, amma har yanzu reacts da ruwa, kafa insoluble rauni tushe :

• H ₂ Ya + MgO = MG (OH) _2.

An mayar da martani tare da wani acid:

• 2HCl + MgO = MgCl ₂ + H ₂ Ya

A calcined magnesium oxide hasarar da reactivity. Ya kamata kuma a kara da cewa wannan foda gigroskopechen.

Shiri na magnesium oxide

A cikin masana'antu, wannan fili da aka shirya da gaske da harbe-harben. A raw kayan amfani ma'adanai irin su dolomite (MgCO3.CaCO3) ko magnesia (MgCO3). Bugu da kari, magnesia ne da za'ayi amfani da wani calcination bishofit (MgCl ₂ x 6H ₂ Ya) a cikin ruwa tururi, calcining MG (OH) 2 da kuma sauran m zuwa da zazzabi MG mahadi. Karkashin awon yanayi, MgO iya shirya ta dauki na ta bijiro da batun kafa da aka gyara:

• 2Mg + O ₂ = 2MgO.

ko da thermal bazuwar daga wasu salts ko hydroxide:

• MgCO ₃ = MgO + CO _2.

Dangane da samar da hanya na magnesium oxide ne m rarrabe biyu main iri mahadi: kãyã da mãsu nauyi magnesia. Na farko shi ne a colorless foda, wanda shi ne mai sauki isa shiga cikin daban-daban dauki tare da tsarma acid, inda MG salts suna kafa. Na biyu ya kunshi manyan lu'ulu'u na halitta ko roba periclase da kuma rarrabe ruwa juriya da kuma shi ne mafi inert.

magnesium oxide

A cikin masana'antu, wannan fili da ake amfani da Manufacturing sumunti, mai tsaurin, kamar yadda filler a roba da kuma ga ma'adinai mai magani. Ultralight magnesium oxide da ake amfani da matsayin sosai lafiya abrasive, wanda aka tsarkake surface. A musamman, shi ne a yi amfani da lantarki a masana'antu. Bugu da kari, magnesia ne yadu amfani a magani. Ina MgO da ake amfani a take hakkin na ciki da acidity matakin da ke faruwa saboda wani wuce haddi na hydrochloric acid. Magnesium oxide kuma dauki ga neutralizing aiki abubuwa na bazata kama a ciki. A cikin masana'antun sarrafa kayayyakin abinci MgO aka yi amfani a matsayin abinci ƙari (E530) code, wanda ya hana clumping da caking. Magnesia ana amfani a gymnastics. A nan, da foda ne amfani da hannun 'yan wasa a tuntube tare da motsa jiki da kayan da aka fi dogara. Add cewa magnesium oxide ne mai cikakkar reflector. A gani coefficient na dũkiyõyinsu a cikin Extended na band ne daidai da hadin kai da kuma saboda haka shi zai iya da kyau a yi amfani a matsayin wani farin tunani.