Yavaibvisa hydrosulfite. Physical uye mushonga zvivako. kunyoresa

Yavaibvisa hydrosulfite - chiri inorganic remubatanidzwa resimbi munyu ane acidic yavaibvisa uye sulfurous iine acid zvisaora (E222) uye antioxidant. Zvinonzi rakanga rachena ehupfumi. Rine zvinotevera zvemakemikari payakavakirwa: NaHSO3.

ehupfumi zvokunyama yavaibvisa hydrosulfite:

1. Zviri chena upfu ane simba grayish tint.
2. vakawanda matadza pamusoro 104.061 g / mol, arambe achirema - 1,48 g / santimetr³.
3. utsotso pfungwa yaiva madhigirii 150 chilis.
4. Zviri soluble mumvura (H2O) uye sanganisa alkalis.

Makemikari ehupfumi pamusoro yavaibvisa hydroxide:

1. anoora kana neshungu:

2NaHSO3 (sodium hydrosulfite) = Na2SO3 (sodium sulfite) + SO2 (sarufa yakasviba asunungurwa kuva gasi) + H2O (mvura)

2. yaora acids:

HCl + NaHSO3 (hydrochloric acid) = NaCl (sodium chloride) + SO2 (sarufa yakasviba) + H2O (mvura)

3. yaora alkalis:

NaHSO3 + NaOH (hydroxide) = Na2SO3 (sodium sulfite) + H2O (mvura)

4. Oxidized okisijeni:

+ O2 = 4NaHSO3 2Na2SO4 (sodium sulfate) + 2SO2 (sarufa dioxide, runopwa) + H2O (mvura)

How kuti yavaibvisa hydrosulfite?

zvinotevera nzira inogona kuwana pfuma;

1. By maitiro yavaibvisa hydroxide ane oxide rwesarufa:
NaOH (sodium chawo) + SO2 (sarufa oxide) = NaHSO3 (sodium hydrosulfite)

2. By zvakaitwa (ari mukamuri tembiricha) kuti yavaibvisa dithionite nemvura uye hydrochloric asidhi:
2Na2S2O4 (sodium dithionite) + H2O (mvura) + HCl (hydrochloric acid) = 2NaHSO3 (sodium hydrosulfite) + S (sarufa, precipitate sezvo a) + NaCl (sodium chloride)

3. Kuburikidza maitiro umo interacts yavaibvisa dithionite, mvura uye okisijeni:
2Na2S2O4 (sodium dithionite mu rakasanganiswa chimiro) + 2H2O (mvura) + O2 (okisijeni) = 4NaHSO3 (sodium hydrosulfite)

Kushandiswa yavaibvisa hydrosulfite:

- chiedza, zvemakemikari nezvimwe maindasitiri;

- zvokudya indasitiri inoshandiswa sechinhu antioxidant kana zvisaora;

- kushandiswa zvinenge waini zvose aiendeswa ekisipoti (kwemakemikari ehupfumi kuti yavaibvisa hydrosulfite iri nyaya chinobatsira kudzivirira oxidation uye kuchengetedza manakiro chinonwiwa);

- rinoshandiswa kuti canning zvibereko kurwisa utachiona uye kudzivirira Browning;

- in kudhaya uye rakanga rachena munyama siyana rinoshandiswa sezvo chichengetedzeso;

- kubvisa reactive madhayi iri värjäys kwacho nedonje;

- kudhaya polyesters kuti reductive yokuzvinatsa;

- sezvo zvisaora iri bleaching kuti machira uye kuderedza mumiririri kuti napachisviniro chako madhayi;

- muna nokukanganisika Engineering rinoshandiswa kuti tirambe anaerobic ezvinhu ari reactor.

Yavaibvisa hydrosulfite chepfu kuvanhu?

tine fuma iri mubvunzo zvakawanda kuwanda zvinogona kukonzera zvakakomba neutachiona. With nemapfumbamwe masere gore NaHSO3 (sezvo potassium bisulfite, E 228) hakubvumidzwi muUnited States kuti kushandiswa iri mbishi michero uye miriwo pashure Muzviitiko zvakawanda, rufu. yavaibvisa hydrosulfite kunokonzera zvirwere zvakasiyana-siyana pamusoro zvomudumbu hurongwa. Maererano EU murayiro pamusoro zvinhu kuti kune ngozi kuvanhu, E 222 chirungiso ndohwaJehovha boka ngozi. In Ukraine, wokuRussia Federation uye fuma mvumo kushandiswa chete pakuomerera kuchengeta zvigadzirwa.

Kushandiswa yavaibvisa bisulfate yaigadzira zvokudya

Izvi zvinhu rinoshandiswa zvokudya indasitiri rinonzi E 222. Izvi zvinobatsira utano chakaita zvokugadzirwa mavambo ane mukuru azvipire ngozi. Nokufamba kwenguva enderana kunokanganisa kukuvadza zvakakomba kuti muviri. Nokuda yacho kutitadzise kubereka uye kukura zvigare uye utachiona kushandiswa antioxidant uye zvisaora. Munzvimbo acidic ezvinhu pamwe yavaibvisa sulfite uchiora kuti sarufa tubhokisi yeimwe nesarufa pacharo.

rubatsiro First kuti muchetura

Zvinokurudzirwa kuti vazorore uye angadziyirwa, yakaoma uye akachena mbatya, uyewo mhepo yakachena. Skin uye meso zvinofanira wosukurudzwa nemvura inotonhorera. unofanira With hudiki kumanikidza aseptic bhandiji. Next, dana amburenzi.