Magnesium hydroxide. 'Meleng le lik'hemik'hale thepa. Kopo.

magnesium hydroxide (moralo MG (OH) 2) - ke inorganic lik'hemik'hale komponeng, magnesium hydroxide (alkaline lefatše tšepe). Ho bua ka makalana sehlopha-insoluble.

thepa ya moaho wa hydroxide magnesium

1. Tlas'a maemo a tloaelehileng, magnesium hydroxide ke colorless (bonaletsang) kristale ho ba le lekhoakhoa hexagonal.
2. bola ho oxide e magnesium (MgO), le metsi (H2O) ka mocheso oa likhato tse makholo a mararo a mashome a mahlano.
3. monyang moea ho tloha carbon dioxide e (CO2) le metsi (H2O), ka tsela eo eaba ba etsa motheo magnesium carbonate.
4. Hoo insoluble ka metsi le qhibilihang ka har'a ka letsoai ammonium.
5. The botlaaseng ba matla mahareng.
6. Ka tlhaho, le hlaha ka mokgwa wa matsoai e khethehileng - brucite.

Mokhoa oa ho fumana magnesium hydroxide?

1. lintho tse bonahalang Sena se ka ka fumanoa ka itšoara letsoai magnesium le alkalies tse fapa-fapaneng tse kang:

MgCl2 (magnesium chloride) + 2NaOH (sodium hydroxide) = MG (OH) 2 (tseko, magnesium hydroxide) + 2NaCl (sodium chloride)

Mg, (NO3) 2 (magnesium nitrate) + 2KOH (botlaaseng potassium) = mg, (OH) 2 (magnesium botlaaseng precipitates) + 2KNO3 (potassium nitrate)

2. Hape, komponeng lik'hemik'hale ka fumanoa ka ho itšoara calcined dolomite le chloride (MgCl2) tharollo ea magnesium (Cao * MgO):

MgCl2 (magnesium chloride) + Cao * MgO (calcined dolomite) + 2H2O (metsi) = 2Mg (OH) 2 (magnesium botlaaseng precipitates) + CaCl2 (khalsiamo chloride)

3. Ground magnesium ka fumanoa hape ke itsoara joang ka ea mouoane ea metsi le magnesium metallic:

Mg, (magnesium tšepe) + 2H2O (mouoane ea metsi) = mg, (OH) 2 (tseko) + H2 (hydrogen ka sebōpeho sa khase a)

The thepa lik'hemik'hale tsa hydroxide magnesium:

1. lintho tse bonahalang Ena e ne e ka mocheso oa likhato tse 350 bola ka oxide e magnesium le metsi. Ho bonahala eka itsoara joang ka sena:

Mg, (OH) 2 (magnesium motheo oa) = MgO (magnesium oxide e) + 2H2O (metsi)

2. sebelisana le acid. Ena letsoai foromo le metsi. mehlala:

Mg, (OH) 2 (botlaaseng) + 2HCl (acid e hydrochloric) = MgCl2 (magnesium chloride) + 2H2O (metsi)

Mg, (OH) 2 (botlaaseng) + H2SO4 (acid e sulfuric) = MgSO4 (magnesium sulfate) + 2H2O (metsi)

3. likarolo le oxides asiti. Ba itšoara joang hlahisa letsoai le metsi:

Mg, (OH) 2 (botlaaseng) + SO3 (oxide e sebabole) = MgSO4 (magnesium sulfate) + H2O (metsi)

4. Hape hydroxide magnesium e ileng a itšoara ka chesang concentrated ditharollo a alkali. Ena gidroksomagnezaty foromo. mehlala:

Mg, (OH) 2 + 2NaOH (sodium botlaaseng) = Na2 (mg, (OH) 4)

Mg, (OH) 2 + S (OH) 2 (sebabole botlaaseng) = sr (mg, (OH) 4)

kopo:

- ka e le ka ho tseloe lijo, tse reretsoeng ho tlamme tsa dioxide e sebabole (SO2). Ngolisitsoeng tlasa E528 letšoao;
- ka e le kalafo fokulyanta metsi a likhoerekhoere;
- jwalo ka ho tseloe ka detergents tse sa tšoaneng le ka karolo ka sesepa sa meno;
- ho hloekisoa ha tsoekere le ho hlahisa magnesium oxide e (MgO);

tlhokomelo e khethehileng e fanoeng ho sebelisa ea lik'hemik'hale ea ho indasteri e bophelo bo botle.

Magnesium hydroxide ka moriana

Sena antacid le laxative moemeli ea nang le bokhoni ea neutralizing le letsoai (hydrochloric, HCl) acid e ka mpeng le le ho fokotsa mosebetsi oa lero gastric. Ka tsela eo ha ho na phello ea hydroxide magnesium e tsamaea le liphetoho AAR le hypersecretion ea bobeli ea acid e hydrochloric. Hape, ntho ena e khothalletsa peristalsis le mala tse ling. bohato Laxative le hlaha ka mor'a ka 2-6 lihora.

Ho bonahala: foleng gastritis le eketsehile ka makhetlo 'me a tloaelehile secretion, duodenal seso le gastric boemong bo sa thabiseng, kapa bohloko epigastric, lesokolla mor'a ho tsuba kapa ho noa kofi kapa joala le pipitlelano.

Contraindications: Hypersensitivity ho hydroxide magnesium.

Hoa hlokomeleha hore bakuli ba nang le mathata a liphio, ka mor'a ho sebelisa botlaaseng magnesium ka ntshetsa pele gipermagnemiya (i.e. e feteletseng ea magnesium 'meleng).

Le boetse le sebelisoa ka moriana algeldrat magnesium hydroxide - sesebelisoa hore e sebediswa bakeng sa gastric seso, a hlobaetsang le duodenitis, giperatsidnom gastritis, gastralgia, pancreatitis foleng, lesokolla, hyperphosphatemia, kapa putrefactive belisoa dipepsii. lithethefatsi ena e contraindicated ka bakuli ba hypersensitivity, lefu la Alzheimer, nakong ea bokhachane kapa anyesa.