Wemagniziyam hayidroksayidi. iipropati Physical nemichiza. Isicelo.

magnesium hayidroksayidi (ifomula MG (OH) 2) - yinto imichiza compound ezingaphiliyo, nemagnesium hayidroksayidi (obrak umhlaba metal). Ibhekisela iziseko qela-ezingenakunyibilika.

Iipropati Physical of wemagniziyam hayidroksayidi

1. Phantsi kweemeko eziqhelekileyo, nemagnesium hayidroksayidi yi colorless (ngaphaya) ziikristale ukuba emkhusaneni ezinamacala amahlanu.
2. abole ku wemagniziyam oxide (MgO), kunye namanzi (H2O) kubushushu degrees amathathu anamakhulu mahlanu.
3. ngokubamba umoya ukusuka carbon dioxide (CO2) kunye namanzi (H2O), ngaloo ndlela bakha engundoqo carbonate wemagniziyam.
4. Enyanisweni ezingenakunyibilika emanzini kunye enyibilikayo neetyuwa.
5. isiseko amandla medium of.
6. Xa ngemvelo, kwenzeka ngohlobo ngezimbiwa okhethekileyo - brucite.

Indlela yokufumana wemagniziyam hayidroksayidi?

1. Le eziphathekayo zingafumaneka ngokuhlanganisa iityuwa wemagniziyam kunye alkalies ezahlukeneyo ezifana:

MgCl2 (magnesium chloride) + 2NaOH (Sodium hayidroksayidi) = MG (OH) 2 (sivete, nemagnesium hayidroksayidi) + 2NaCl (sodium chloride)

Mg (NO3) 2 (wemagniziyam nitrate) + 2KOH (isiseko potassium) = mg (OH) 2 (isiseko wemagniziyam ngokwemvula) + 2KNO3 (potassium nitrate)

2. Kwakhona, a ikhemikhali zingafumaneka ngokuhlanganisa calcined dolomite chloride (MgCl2) nesisombululo wemagniziyam (cao * MgO):

MgCl2 (magnesium chloride) + cao * MgO (dolomite calcined) + 2H2O (amanzi) = 2Mg (OH) 2 (isiseko wemagniziyam ngokwemvula) + CaCl2 (calcium chloride)

3. magnesium Ground inokufunyanwa kananjalo indlela umphunga wamanzi kunye wemagniziyam sisinyithi:

Mg (magnesium metal) + 2H2O (umphunga wamanzi) = mg (OH) 2 (sivete) + H2 (hydrogen ngokohlobo a gas)

Iimpawu lwemichiza wemagniziyam hayidroksayidi:

1. Le ndaba kubushushu degrees 350 abole abe wemagniziyam oxide kunye namanzi. Kubonakala ngathi le yokusabela:

Mg (OH) 2 (basis wemagniziyam) = MgO (wemagniziyam oxide) + 2H2O (amanzi)

2. Ukusebenzisana asidi. Kule fomu ityuwa namanzi. imizekelo:

Mg (OH) 2 (isiseko) + 2HCl (zehydrochloric acid) = MgCl2 (wemagniziyam chloride) + 2H2O (amanzi)

Mg (OH) 2 (isiseko) + H2SO4 (sulphuric acid) = MgSO4 (wemagniziyam sulfate) + 2H2O (amanzi)

3. Ujongano kunye oxides emuncu. Indlela abasabela uvelisa ityuwa namanzi:

Mg (OH) 2 (isiseko) + SO3 (sulphur oxide) = MgSO4 (wemagniziyam sulfate) + H2O (amanzi)

4. Kwakhona magnesium hayidroksayidi ukuba awasabela ngayo kunye nezisombululo ezishushu bagxila kwealkali. Kule fomu gidroksomagnezaty. imizekelo:

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

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

isicelo:

- njenge additive ukutya, esilungiselelwe ezibophelelayo kwe-sulphur dioxide (SO2). Libhaliswe phantsi E528 umqondiso;
- njengokuba unyango fokulyanta amdaka;
- njengokuba isongezo in iisepha ezahlukeneyo yaye licandelo yamazinyo;
- nokusulungekiswa iswekile kunye nokuvelisa wemagniziyam oxide (MgO);

ingqalelo eyodwa inikwa ukusebenzisa bamachiza kwishishini lwezempilo na.

Magnesium hayidroksayidi imithi

Le esesiwini kunye isisu kwenza arhente ekwaziyo lwaze namnye (zehydrochloric, HCl) acid esiswini inciphise umsebenzi yejusi esiswini. Ngenxa yoko akukho isiphumo wemagniziyam hayidroksayidi lukhatshwa utshintsho Aar kunye hypersecretion zasesekondari zehydrochloric acid. Kwakhona, le nto ikhuthaza peristalsis kunye nezinye namathumbu. inyathelo isisu kwenzeka emva malunga 2-6 kweeyure.

Iimpawu: gastritis ezingapheliyo kunye okwandileyo kwaye eqhelekileyo secretion, isilonda duodenal kuhlolwe esiswini, okanye intlungu epigastric, heartburn emva ukutshaya okanye ukusela ikofu okanye utywala, nokuqunjelwa.

Izimo: Hypersensitivity ukuya wemagniziyam hayidroksayidi.

Kuyaphawuleka ukuba izigulane ezineengxaki zezintso, emva kokuba isicelo isiseko wemagniziyam ukuze aphuhlise gipermagnemiya (ngamanye agqithisile wemagniziyam emzimbeni).

Kwakhona kusetyenziswa amayeza algeldrat wemagniziyam hayidroksayidi - sisixhobo osetyenziswa isilonda esiswini, duodenitis etsolo, giperatsidnom gastritis, gastralgia, pancreatitis esinganyangekiyo, heartburn, hyperphosphatemia, okanye putrefactive ukubila dipepsii. Le ichiza contraindicated kwizigulane kunye hypersensitivity, isifo i-Alzheimer, ngexesha ekhulelwe okanye ukuncancisa umntwana wakhe ubisi lwebele.