Magnesium hydroxide. Physical futhi amakhemikhali izakhiwo. Isicelo.

magnesium hydroxide (ifomula MG (OH) 2) - kuyinto wezinto ezingaphili chemical kwakwakhe, magnesium hydroxide (ane-alikhali emhlabeni metal). Libhekisela lezisekelo iqembu-zingaxazululeki.

Izakhiwo i-magnesium hydroxide

1. Ngaphansi kwezimo ezivamile, i-magnesium hydroxide Ayinambala (ngale) zinhlayiya kokuba ngehele olunezinhlangothi.
2. ubola ukuze magnesium oxide (MgO), namanzi (H2O) at lokushisa amathathu namashumi amahlanu.
3. ubamba emoyeni kusuka carbon dioxide (CO2) namanzi (H2O), kanjalo zakha isimiso esiyisisekelo magnesium carbonate.
4. Cishe zingaxazululeki amanzi encibilikayo ammonium nosawoti.
5. Kumila amandla aphakathi.
6. Emvelweni, kwenzeka ngesimo mineral ekhethekile - brucite.

Ingatholakala kanjani magnesium hydroxide?

1. Lokhu kwaziswa ingatholakala ukusabela magnesium nosawoti ne alkalies ezehlukene ezifana:

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

Mg (NO3) 2 (magnesium nitrate) + 2KOH (isizinda potassium) = mg (OH) 2 (base-magnesium kusheshisa) + 2KNO3 (potassium nitrate)

2. Futhi, ekhuthaza kwamakhemikhali ingatholakala Benziwa calcined dolomite chloride (MgCl2) isixazululo magnesium (CAO * MgO):

MgCl2 (magnesium chloride) + Cao * MgO (dolomite calcined) + 2H2O (amanzi) = 2Mg (OH) 2 (base-magnesium kusheshisa) + CaCl2 (calcium chloride)

3. Ground magnesium ingatholakala nangokuzama ukusabela umhwamuko ne-magnesium metallic:

Mg (magnesium metal) + 2H2O (umhwamuko) = mg (OH) 2 (ukugqashuka) + H2 (hydrogen ngesimo igesi)

I izakhiwo amakhemikhali magnesium hydroxide:

1. Lokhu kwaziswa kwaba ezingeni lokushisa 350 degrees ubola ku -magnesium oxide namanzi. Kubonakala sengathi lesi simo:

Mg (OH) 2 (magnesium isisekelo) = MgO (magnesium oxide) + 2H2O (amanzi)

2. Ukuxhumana nama-asidi. Kulesi usawoti namanzi fomu. izibonelo:

Mg (OH) 2 (isizinda) + 2HCl (hydrochloric acid) = MgCl2 (magnesium chloride) + 2H2O (amanzi)

Mg (OH) 2 (isizinda) + H2SO4 (sulfuric acid) = MgSO4 (magnesium sulfate) + 2H2O (amanzi)

3. Interfaces nge oxides ene-asidi. Ukusabela khiqiza usawoti namanzi:

Mg (OH) 2 (isizinda) + SO3 (sulphur oxide) = MgSO4 (magnesium sulfate) + H2O (amanzi)

4. Futhi magnesium hydroxide is wasithukuthelela ashisayo bagxila izixazululo alikhali. Kulesi gidroksomagnezaty fomu. izibonelo:

Mg (OH) 2 + 2NaOH (i-sodium isizinda) = Na2 (mg (OH) 4)

Mg (OH) 2 + S (OH) 2 (sulphur isizinda) = Sr (mg (OH) 4)

Isicelo:

- njengoba okufakiwe ukudla, eyenzelwe esibophezelayo-sulfur dioxide (SO2). Bhalisiwe ngaphansi E528 uphawu;
- njengendlela yokwelapha isimo fokulyanta anokungcola;
- njengenhlangano okufakiwe e izihlanzi ehlukahlukene njengoba ingxenye wokuxubha;
- yokucwenga ushukela ukukhiqiza magnesium oxide (MgO);

ukunakekela okukhethekile unikezwa ukusebenzisa kwamakhemikhali umkhakha kwezempilo.

Magnesium hydroxide kwezokwelapha

Lokhu antacid futhi laxative ejenti uyakwazi zokuyithena usawoti (hydrochloric, HCl) acid esiswini ukunciphisa umsebenzi of juice esiswini. Ngakho akukho umphumela magnesium hydroxide kuhambisana izinguquko Aar futhi hypersecretion yesibili hydrochloric acid. Futhi, lolu ketshezi ikhuthaza peristalsis nezinye namathumbu. isinyathelo imithi yokuhlambulula isisu kwenzeka ngemva kwamahora angaba ngu-2-6.

Izimpawu: kolwelwesi ezingamahlalakhona uketshezi kakhudlwana futhi evamile, isilonda duodenal nokuphatheka kabi esiswini, noma ubuhlungu epigastric, isilungulela ngemva ukubhema noma ukuphuza ikhofi noma uphuzo oludakayo, futhi ukuqunjelwa.

Izimo: Hypersensitivity ukuze magnesium hydroxide.

Kuyaphawuleka ukuthi iziguli ezinezinkinga zezinso, ngemva isicelo base-magnesium angagcina gipermagnemiya (isb ngokweqile magnesium emzimbeni).

Futhi kusetshenziswa imithi algeldrat magnesium hydroxide - ithuluzi ukuthi isetshenziselwa isilonda esiswini duodenitis acute, giperatsidnom kolwelwesi, gastralgia, pancreatitis okungamahlalakhona, isilungulela, hyperphosphatemia, noma putrefactive ukuvutshelwa dipepsii. Lesi sidakamizwa is contraindicated in iziguli hypersensitivity, isifo i-Alzheimer, ngesikhathi ekhulelwe noma ukuncelisa ibele.