Magnesium hydroxide. Physical uye mushonga zvivako. Application.

magnesium hydroxide (payakavakirwa MG (OH) 2) - iri inorganic namakemikari remubatanidzwa magnesium hydroxide (pasi alkaline simbi). Rinoreva boka-insoluble zvigadziko.

ehupfumi zvokunyama magnesium hydroxide

1. Pasi kwomuzvarirwo ezvinhu, magnesium hydroxide ndiyo Hauoneki (segirazi) crystals kuva hexagonal napamahwindo.
2. uchiora kuti magnesium oxide (MgO), uye mvura (H2O) pane imwe tembiricha rworwendo matatu namakumi mashanu.
3. absorbs mhepo kubva carbon dioxide inobvisa (CO2) uye mvura (H2O), nokudaro wezvamatongerwe inokosha magnesium carbonate.
4. Magadzirirwo insoluble mumvura uye soluble mu Ammonium munyu.
5. The nehwaro unosvikirwa simba.
6. zvakasikwa, rinowanikwa muchimiro rinokosha chicherwa - brucite.

How kuwana magnesium hydroxide?

1. Izvi zvinhu zvinogona kuwanikwa zvokuverengera magnesium munyu pamwe siyana alkalies dzakadai:

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

MG (NO3) 2 (magnesium nitrate) + 2KOH (potassium chawo) = MG (OH) 2 (magnesium chawo precipitates) + 2KNO3 (potassium nitrate)

2. Uyewo, makemikari remubatanidzwa chingawanikwa zvokuverengera calcined dolomite pamwe chloride (MgCl2) mhinduro kubva magnesium (Cao * MgO):

MgCl2 (magnesium chloride) + Cao * MgO (calcined dolomite) + 2H2O (mvura) = 2Mg (OH) 2 (magnesium chawo precipitates) + CaCl2 (karusiyamu chloride)

3. Ground magnesium kunogona kuwanikwa kubudikidza maitiro remvura mhute pamwe esimbi magnesium:

MG (magnesium simbi) + 2H2O (mvura mhute) = MG (OH) 2 (chiito) + H2 (rehydrogen muchimiro gasi)

Makemikari ehupfumi pamusoro magnesium hydroxide:

1. Izvi zvinhu kwakanga tembiricha 350 madhigirii uchiora kupinda magnesium oxide uye mvura. Zvinoita seizvi kuita:

MG (OH) 2 (magnesium hwaro) = MgO (magnesium oxide) + 2H2O (mvura)

2. kudyidzana pamwe acids. In ichi chimiro munyu uye mvura. mienzaniso:

MG (OH) 2 (chawo) + 2HCl (hydrochloric acid) = MgCl2 (magnesium chloride) + 2H2O (mvura)

MG (OH) 2 (chawo) + H2SO4 (sulfuric acid) = MgSO4 (magnesium sulfate) + 2H2O (mvura)

3. Interfaces pamwe acidic oxides. Zvakaitwa anobereka munyu uye mvura:

MG (OH) 2 (chawo) + SO3 (sarufa oxide) = MgSO4 (magnesium sulfate) + H2O (mvura)

4. Uyewo magnesium hydroxide iri vakaita with hot dzichiitika alkali mhinduro. In ichi fomu gidroksomagnezaty. mienzaniso:

MG (OH) 2 + 2NaOH (sodium chawo) = Na2 (MG (OH) 4)

MG (OH) 2 + S (OH) 2 (sarufa chawo) = Sr (MG (OH) 4)

Application:

- sezvokudya chirungiso, akagadzirirwa kuti kunyorerana rwesarufa yakasviba (SO2). Vakanyorwa pasi chiratidzo E528;
- sezvo fokulyanta wastewater kurapwa;
- somunhu chirungiso mu detergents siyana uye sechipiriso chinoumba mu mushonga wemazino;
- pakuchenesa shuga uye kubereka magnesium oxide (MgO);

Special nzeve anopiwa kushandisa zviri kwemakemikari mukati zveutano indasitiri.

Magnesium hydroxide mu mushonga

Izvi antacid uye laxative mumiririri aigona neutralizing mumwe munyu (hydrochloric, HCl) asidhi mudumbu uye kuderedza basa gastric muto. Saka hapana mugumisiro magnesium hydroxide achabatsirwa kuchinja AAR uye yechipiri hypersecretion pamusoro hydrochloric acid. Uyewo, fuma iyi kunoita peristalsis nezvimwe ura. Laxative chiito kunoitika pashure maawa anenge 2-6.

Zvairatidza: chisingaperi gastritis pamwe rakawedzera uye kuipa secretion, duodenal urikanwi uye gastric kusanzwa, kana epigastric marwadzo, chirungurira pashure kusvuta kana kunwa kofi kana doro, uye kupatira.

Contraindications: Hypersensitivity kuti magnesium hydroxide.

Zvinokosha kucherechedza kuti varwere itsvo nematambudziko, pashure pokushandisa magnesium nechigadziko zvingamuka gipermagnemiya (i.e. ane nekumwisa magnesium mumuviri).

Also inoshandiswa mukurapa algeldrat magnesium hydroxide - chombo chinoshandiswa kuti gastric urikanwi, rikwanise duodenitis, giperatsidnom gastritis, gastralgia, chisingaperi pfungwa nomuviri zvemwana asati, chirungurira, hyperphosphatemia, kana putrefactive chinovira dipepsii. mushonga Izvi contraindicated mu varwere hypersensitivity, chirwere cheAlzheimer, panguva pamuviri kana uchiyamwisa.