Magnesium hydroxide. Anụ ahụ na chemical Njirimara. Ngwa.

magnesium hydroxide (usoro mg (OH) 2) - bụ ihe inorganic chemical compound, magnesium hydroxide (alkaline ala metal). Ọ na-ezo aka otu-unyi anaghị agbasa na bases.

Physical Njirimara nke magnesium hydroxide

1. N'okpuru nkịtị ọnọdụ, magnesium hydroxide bụ colorless (uzo) kristal enwe a hexagonal lattice.
2. erekasịchaala ka magnesium oxide (MgO), na mmiri (H2O) na okpomọkụ nke na narị atọ na iri ise degrees.
3. na-amịkọrọ ikuku si carbon dioxide (CO2) na mmiri (H2O), si otú na-akpụ a isi magnesium carbonate.
4. Fọrọ unyi anaghị agbasa na mmiri na soluble na ammonium salts.
5. The isi nke na-ajụ ike.
6. uwa, pụtara n'ụdị a pụrụ iche ịnweta - brucite.

Olee otú iji nweta magnesium hydroxide?

1. Nke a ihe onwunwe pụrụ inweta site omume magnesium salts dị iche iche alkalies dị ka:

MgCl2 (magnesium chloride) + 2NaOH (sodium hydroxide) = mg (OH) 2 (precipitated, magnesium hydroxide) + 2NaCl (sodium chloride)

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

2. Ọzọkwa, a chemical compound nwere ike enwetara site na-emeghachi omume calcined dolomite na chloride (MgCl2) ngwọta nke magnesium (CaO * MgO):

MgCl2 (magnesium chloride) + CaO * MgO (calcined dolomite) + 2H2O (mmiri) = 2Mg (OH) 2 (magnesium isi precipitates) + CaCl2 (calcium chloride)

3. Ground magnesium pụrụ inweta site na mmeghachi omume nke mmiri vepo na dara magnesium:

Mg (magnesium metal) + 2H2O (mmiri vepo) = mg (OH) 2 (precipitated) + H2 (hydrogen n'ụdị a gas)

The chemical Njirimara nke magnesium hydroxide:

1. Nke a ihe onwunwe bụ na a okpomọkụ nke 350 degrees erekasịchaala n'ime magnesium oxide na mmiri. Ọ anya dị ka a mmeghachi omume:

Mg (OH) 2 (magnesium ndabere) = MgO (magnesium oxide) + 2H2O (mmiri)

2. Mmekọrịta na asịd. N'ụdị a nnu na mmiri. ihe atụ:

Mg (OH) 2 (isi) + 2HCl (hydrochloric acid) = MgCl2 (magnesium chloride) + 2H2O (mmiri)

Mg (OH) 2 (isi) + H2SO4 (na igirigi ibu sulphuric acid) = MgSO4 (magnesium sulfate) + 2H2O (mmiri)

3. ihu na acidic oxides. The mmeghachi omume na-amị bụ nnu na mmiri:

Mg (OH) 2 (isi) + SO3 (sọlfọ oxide) = MgSO4 (magnesium sulfate) + H2O (mmiri)

4. Ọzọkwa magnesium hydroxide na-meghachi omume na-ekpo ọkụ lekwasị alkali ngwọta. N'ụdị a gidroksomagnezaty. ihe atụ:

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

Mg (OH) 2 + S (OH) 2 (sọlfọ isi) = SR (mg (OH) 4)

ngwa:

- ka a nri mmako, haziri maka na-adịgide adịgide nke sọlfọ dioxide (SO2). Aha n'okpuru ihe ịrịba ama E528;
- ka fokulyanta wastewater ọgwụgwọ;
- dị ka ihe mmako dị iche iche detergents na dị ka a akụrụngwa na asa ezé;
- anụcha sugar na-emepụta magnesium oxide (MgO);

Uche pụrụ iche na-enye iji nke chemical na ahụike ụlọ ọrụ.

Magnesium hydroxide na nkà mmụta ọgwụ

Nke a antacid na laxative gị n'ụlọnga nwere ike dị iche iche a nnu (hydrochloric, HCl) acid ke afo ma belata ọrụ nke gastric ihe ọṅụṅụ. N'ihi ya ọ dịghị mmetụta nke magnesium hydroxide na-esonyere mgbanwe AAR na sekọndrị hypersecretion nke hydrochloric acid. Ọzọkwa, a na umi-akwalite peristalsis na ndị ọzọ na eriri afọ. Laxative edinam emee mgbe banyere 2-6 awa.

Egosi: ala ala mgbu na ubara na nkịtị secretion, duodenal ọnyá afọ na gastric erughị ala, ma ọ bụ epigastric mgbu, nrekasi obi mgbe aṅụ sịga ma ọ bụ na-aṅụ kọfị ma ọ bụ mmanya, na afọ ntachi.

Contraindications: Hypersensitivity ka magnesium hydroxide.

Ọ bụ ihe kwesịrị ịrịba ama na ọrịa na akụrụ nsogbu, mgbe ngwa nke magnesium isi nwere ike ịzụlite gipermagnemiya (i.e. ngafe nke magnesium ke idem).

Ọzọkwa-eji na nkà mmụta ọgwụ algeldrat magnesium hydroxide - a ngwá ọrụ na-eji maka gastric ọnyá afọ, nnukwu duodenitis, giperatsidnom mgbu, gastralgia, ala ala pancreatitis, nrekasi obi, hyperphosphatemia, ma ọ bụ putrefactive gbaa ụka dipepsii. A ọgwụ na-contraindicated na ọrịa na hypersensitivity, ọrịa Alzheimer, n'oge ime ma ọ bụ ara.